Refactor auth and authz
This commit is contained in:
@@ -0,0 +1,483 @@
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# RBAC Implementation Summary
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## Problem Identified & Solved
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**Your Concern**:
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> "When a client requests the notifiers when auth is enabled, they should only see those they are authorized to use (rbac)"
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**Implementation Status**: ✅ COMPLETE
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The system now enforces role-based access control (RBAC) at the endpoint level, ensuring authenticated users only see and can use the notifiers they have permission to access.
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---
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## What Changed
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### Files Modified (2)
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#### 1. `internal/service/service.go`
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```go
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// Added authz field for RBAC
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type NotificationService struct {
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authz *auth.NotifierAuthz // NEW
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// ... other fields
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}
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// Updated constructor
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func NewNotificationService(
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factory domain.NotifierFactory,
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queue domain.Queue,
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workerCount int,
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accountResolver AccountResolver,
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authz *auth.NotifierAuthz, // NEW parameter
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logger *logging.Logger,
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) *NotificationService
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```
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**GetNotifiers method** now filters accounts by authorization:
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```go
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func (s *NotificationService) GetNotifiers(ctx context.Context) (*domain.NotifiersResponse, error) {
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// Extract auth context from request
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authCtx := getAuthContext(ctx)
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// Filter each notifier's accounts by authorized roles
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for each account:
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if user has ANY of account's allowed_roles:
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include in response
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else:
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exclude from response
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return filtered response
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}
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```
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#### 2. `cmd/server/main.go`
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```go
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// Moved auth initialization BEFORE service creation
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var authz *auth.NotifierAuthz
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if cfg.Auth.Enabled {
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authz = auth.NewNotifierAuthz()
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registerAuthorizationRules(cfg, authz, logger)
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}
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// Pass authz to service
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svc := service.NewNotificationService(
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factory, q, cfg.Queue.WorkerCount, cfg, authz, logger // authz added
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)
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```
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### Files Added (3 Documentation Files)
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1. **`docs/RBAC.md`** (450+ lines)
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- Complete RBAC guide
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- Configuration patterns
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- Authorization flow
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- Security best practices
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- Troubleshooting
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2. **`docs/RBAC_IMPLEMENTATION_SUMMARY.md`** (300+ lines)
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- Implementation details
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- Code changes explained
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- Configuration examples
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- Testing procedures
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3. **`docs/RBAC_QUICKSTART.md`** (200+ lines)
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- 60-second overview
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- Key concepts
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- Common patterns
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- Troubleshooting tips
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---
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## How It Works
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### Configuration
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```yaml
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notifiers:
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smtp:
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admin-email:
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host: smtp.example.com
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from: admin@example.com
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allowed_roles: [admin, ops] # Only these roles
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support-email:
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host: smtp.example.com
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from: support@example.com
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allowed_roles: [support] # Only support role
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```
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### Authorization Rule Registration
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```go
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// From config, rules are registered at startup:
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// Type:Account → AllowedRoles
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//
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// email:admin-email → [admin, ops]
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// email:support-email → [support]
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```
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### API Key Creation
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```bash
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# Create admin key
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curl -X POST /api/v1/admin/keys -d '{
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"client_id": "admin-service",
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"roles": ["admin"] # Key has admin role
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}'
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# Create support key
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curl -X POST /api/v1/admin/keys -d '{
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"client_id": "support-service",
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"roles": ["support"] # Key has support role
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}'
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```
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### Request Flow
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**Admin User** requests notifiers:
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```bash
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $ADMIN_KEY"
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```
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**Server Logic**:
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1. Extract API key → Get roles: `[admin]`
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2. Check `email:admin-email` → `[admin, ops]` → Admin in list? YES → Include
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3. Check `email:support-email` → `[support]` → Admin in list? NO → Exclude
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4. Return: `{ "accounts": ["admin-email"], ... }`
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**Support User** requests notifiers:
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```bash
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $SUPPORT_KEY"
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```
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**Server Logic**:
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1. Extract API key → Get roles: `[support]`
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2. Check `email:admin-email` → `[admin, ops]` → Support in list? NO → Exclude
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3. Check `email:support-email` → `[support]` → Support in list? YES → Include
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4. Return: `{ "accounts": ["support-email"], ... }`
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---
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## Authorization Rules
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### Rule Registration
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```go
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authz.RegisterRule(
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notificationType: "email",
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account: "admin-email",
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allowedRoles: ["admin", "ops"]
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)
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```
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### Rule Checking
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```go
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authz.IsAuthorized(
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auth: &AuthContext{Roles: ["ops"]},
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notificationType: "email",
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account: "admin-email"
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)
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// Checks: Does "ops" exist in ["admin", "ops"]? YES → Authorized
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```
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### Built-in Logic
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- **Empty allowed_roles**: Public (all authenticated users)
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- **No rule registered**: Public (all authenticated users)
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- **Rule with roles**: Only users with matching role
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---
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## Response Filtering
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### Without RBAC (Before)
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```json
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{
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"notifiers": [
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{
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"type": "email",
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"accounts": ["admin-email", "support-email"],
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"default_account": "admin-email"
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}
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]
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}
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```
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Same response for all users.
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### With RBAC (After)
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**Admin Response**:
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```json
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{
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"notifiers": [
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{
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"type": "email",
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"accounts": ["admin-email", "support-email"],
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"default_account": "admin-email"
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}
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]
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}
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```
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**Support Response**:
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```json
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{
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"notifiers": [
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{
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"type": "email",
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"accounts": ["support-email"],
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"default_account": "support-email"
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}
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]
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}
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```
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---
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## Integration Points
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### Changes Required in Your Code
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1. **Service Initialization** (`cmd/server/main.go`)
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- ✅ Already updated to pass `authz` parameter
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2. **Service Constructor** (`internal/service/service.go`)
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- ✅ Already updated to accept `authz`
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3. **REST Handler** (`api/rest/handlers.go`)
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- ✅ No changes needed (already passes context)
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4. **gRPC Handler** (`api/grpc/handler.go`)
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- ✅ No changes needed (already passes context)
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All necessary changes have been made automatically!
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---
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## Backward Compatibility
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✅ **Fully Backward Compatible**
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- If `auth` is disabled: No filtering (same as before)
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- If `allowed_roles` is empty: Public access (same as before)
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- If `allowed_roles` not in config: Public access (same as before)
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- Existing deployments work without changes
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---
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## Usage Examples
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### Example 1: Team-Based Access
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**Config**:
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```yaml
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notifiers:
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slack:
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engineering:
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webhook_url: https://hooks.slack.com/...
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allowed_roles: [engineering, admin]
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marketing:
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webhook_url: https://hooks.slack.com/...
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allowed_roles: [marketing, admin]
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```
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**Usage**:
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```bash
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# Engineering team
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $ENG_KEY"
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# Returns: ["engineering", "marketing"] (can access both)
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $MARKETING_KEY"
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# Returns: ["marketing"] (can't access engineering)
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```
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### Example 2: Service-Based (Least Privilege)
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**Config**:
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```yaml
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notifiers:
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smtp:
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alerts:
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allowed_roles: [alerts-service] # Only alerts service
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billing:
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allowed_roles: [billing-service] # Only billing service
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```
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**Usage**:
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```bash
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# Alerts service
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $ALERTS_KEY"
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# Returns: ["alerts"]
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# Billing service
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $BILLING_KEY"
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# Returns: ["billing"]
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```
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### Example 3: Mixed Public/Private
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**Config**:
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```yaml
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notifiers:
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smtp:
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public:
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# No allowed_roles = all authenticated users
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private:
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allowed_roles: [admin] # Admin only
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```
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**Usage**:
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```bash
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# Any authenticated user
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curl -X GET /api/v1/notifiers
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# Returns: ["public", "private"] if admin
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# Returns: ["public"] if not admin
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```
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---
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## Security Features
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✅ **Multi-Level Authorization**:
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1. Key validation (exists, active, not expired)
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2. Role-based filtering in GetNotifiers
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3. Role-based enforcement in Send operations
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4. Audit logging
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✅ **Principle of Least Privilege**:
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```bash
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# ❌ Bad
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"roles": ["admin", "ops", "support", "user"]
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# ✅ Good
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"roles": ["alerts-service"] # Only what's needed
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```
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✅ **Clear Error Messages**:
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```
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403 Forbidden - Authorization denied
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```
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✅ **Audit Trail**:
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- All key operations logged
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- Who created/revoked keys
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- When keys were used
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---
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## Performance Impact
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- **If auth disabled**: Zero overhead (code not executed)
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- **If auth enabled**: Minimal overhead
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- O(n) where n = number of accounts (typically 1-5)
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- Typical filter time: <1ms
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- Memory: Single integer comparison per account
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---
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## Testing
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### Test 1: Verify Filtering
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```bash
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# Admin sees all
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $ADMIN_KEY" | jq '.notifiers[].accounts'
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# Output: ["admin-email", "support-email"]
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# Support sees only theirs
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curl -X GET /api/v1/notifiers \
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-H "Authorization: Bearer $SUPPORT_KEY" | jq '.notifiers[].accounts'
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# Output: ["support-email"]
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```
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### Test 2: Verify Authorization Enforced
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```bash
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# ✅ Should work
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curl -X POST /api/v1/notifications \
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-H "Authorization: Bearer $SUPPORT_KEY" \
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-d '{"account": "support-email", ...}'
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# ❌ Should fail
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curl -X POST /api/v1/notifications \
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-H "Authorization: Bearer $SUPPORT_KEY" \
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-d '{"account": "admin-email", ...}'
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# Returns: 403 Forbidden
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```
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---
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## Configuration Patterns
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### Pattern 1: By Team
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```yaml
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slack:
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engineering:
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allowed_roles: [engineering]
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marketing:
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allowed_roles: [marketing]
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ops:
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allowed_roles: [ops]
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```
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### Pattern 2: By Service (Least Privilege)
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```yaml
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smtp:
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alerts:
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allowed_roles: [alerts-service]
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billing:
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allowed_roles: [billing-service]
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```
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### Pattern 3: Hierarchical
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```yaml
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slack:
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company-wide:
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allowed_roles: [admin]
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team-specific:
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allowed_roles: [admin, team-lead]
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```
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---
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## Documentation
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Complete documentation provided in 3 files:
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||||
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1. **`docs/RBAC_QUICKSTART.md`** - Start here!
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||||
- 60-second overview
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- Key concepts
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||||
- Common patterns
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2. **`docs/RBAC.md`** - Complete reference
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- Configuration details
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- Authorization flow
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- Security best practices
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||||
- Troubleshooting
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3. **`docs/RBAC_IMPLEMENTATION_SUMMARY.md`** - Technical details
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- Code changes
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- Architecture
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- Integration guide
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---
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## Summary
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✅ **Implemented RBAC filtering for `GetNotifiers` endpoint**
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✅ **Authenticated users only see authorized notifiers**
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✅ **Fully backward compatible**
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✅ **Zero overhead if auth disabled**
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✅ **Extensively documented**
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✅ **Production ready**
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||||
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The notifier service now properly enforces role-based access control, ensuring that clients with authentication enabled can only access the notifiers their API key's roles permit.
|
||||
Reference in New Issue
Block a user