Entire CLI will link this conversation to your next commit.


<local-command-caveat>Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.</local-command-caveat>


<command-name>/model</command-name>
            <command-message>model</command-message>
            <command-args></command-args>


<local-command-stdout>Set model to Opus 4.8 (1M context) and saved as your default for new sessions</local-command-stdout>


Replace the gorilla/sessions package with  github.com/alexedwards/scs/v2


claude claude-code-guide Explore general-purpose Plan statusline-setup

- claude: Catch-all for any task that doesn't fit a more specific agent. FleetView's default when no agent name is typed. (Tools: *)

- claude-code-guide: Use this agent when the user asks questions ("Can Claude...", "Does Claude...", "How do I...") about: (1) Claude Code (the CLI tool) - features, hooks, slash commands, MCP servers, settings, IDE integrations, keyboard shortcuts; (2) Claude Agent SDK - building custom agents; (3) Claude API (formerly Anthropic API) - API usage, tool use, Anthropic SDK usage. **IMPORTANT:** Before spawning a new agent, check if there is already a running or recently completed claude-code-guide agent that you can continue via SendMessage. (Tools: Bash, Read, WebFetch, WebSearch)

- Explore: Read-only search agent for broad fan-out searches — when answering means sweeping many files, directories, or naming conventions and you only need the conclusion, not the file dumps. It reads excerpts rather than whole files, so it locates code; it doesn't review or audit it. Specify search breadth: "medium" for moderate exploration, "very thorough" for multiple locations and naming conventions. (Tools: All tools except Agent, ExitPlanMode, Edit, Write, NotebookEdit)

- general-purpose: General-purpose agent for researching complex questions, searching for code, and executing multi-step tasks. When you are searching for a keyword or file and are not confident that you will find the right match in the first few tries use this agent to perform the search for you. (Tools: *)

- Plan: Software architect agent for designing implementation plans. Use this when you need to plan the implementation strategy for a task. Returns step-by-step plans, identifies critical files, and considers architectural trade-offs. (Tools: All tools except Agent, ExitPlanMode, Edit, Write, NotebookEdit)

- statusline-setup: Use this agent to configure the user's Claude Code status line setting. (Tools: Read, Edit)


- deep-research: Deep research harness — fan-out web searches, fetch sources, adversarially verify claims, synthesize a cited report. - When the user wants a deep, multi-source, fact-checked research report on any topic. BEFORE invoking, check if the question is specific enough to research directly — if underspecified (e.g., "what car to buy" without budget/use-case/region), ask 2-3 clarifying questions to narrow scope. Then pass the refined question as args, weaving the answers in.
- frontend-design:frontend-design: Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.
- update-config: Use this skill to configure the Claude Code harness via settings.json. Automated behaviors ("from now on when X", "each time X", "whenever X", "before/after X") require hooks configured in settings.json - the harness executes these, not Claude, so memory/preferences cannot fulfill them. Also use for: permissions ("allow X", "add permission", "move permission to"), env vars ("set X=Y"), hook troubleshooting, or any changes to settings.json/settings.local.json files. Examples: "allow npm commands", "add bq permission to global settings", "move permission to user settings", "set DEBUG=true", "when claude stops show X". For simple settings like theme/model, suggest the /config command.
- keybindings-help: Use when the user wants to customize keyboard shortcuts, rebind keys, add chord bindings, or modify ~/.claude/keybindings.json. Examples: "rebind ctrl+s", "add a chord shortcut", "change the submit key", "customize keybindings".
- verify: Verify that a code change actually does what it's supposed to by running the app and observing behavior. Use when asked to verify a PR, confirm a fix works, test a change manually, check that a feature works, or validate local changes before pushing.
- code-review: Review the current diff for correctness bugs and reuse/simplification/efficiency cleanups at the given effort level (low/medium: fewer, high-confidence findings; high→max: broader coverage, may include uncertain findings). Pass --comment to post findings as inline PR comments, or --fix to apply the findings to the working tree after the review.
- simplify: Review the changed code for reuse, simplification, efficiency, and altitude cleanups, then apply the fixes. Quality only — it does not hunt for bugs; use /code-review for that.
- fewer-permission-prompts: Scan your transcripts for common read-only Bash and MCP tool calls, then add a prioritized allowlist to project .claude/settings.json to reduce permission prompts.
- loop: Run a prompt or slash command on a recurring interval (e.g. /loop 5m /foo). Omit the interval to let the model self-pace. - When the user wants to set up a recurring task, poll for status, or run something repeatedly on an interval (e.g. "check the deploy every 5 minutes", "keep running /babysit-prs"). Do NOT invoke for one-off tasks.
- schedule: Create, update, list, or run scheduled cloud agents (routines) that execute on a cron schedule. - When the user wants to schedule a recurring cloud agent, set up automated tasks, create a cron job for Claude Code, or manage their scheduled agents/routines. Also use when the user wants a one-time scheduled run ("run this once at 3pm", "remind me to check X tomorrow").
- claude-api: Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration.
TRIGGER — read BEFORE opening the target file; don't skip because it "looks like a one-liner" — whenever: the prompt names Claude/Anthropic in any form (Claude, Anthropic, Fable, Opus, Sonnet, Haiku, `anthropic`, `@anthropic-ai`, `claude-*`, `us.anthropic.*`, `[1m]`); the user asks about an LLM (pricing/model choice/limits/caching) — never answer from memory; OR the task is LLM-shaped with provider unstated (agent/MCP/tool-definition/multi-agent/RAG/LLM-judge/computer-use; generate/summarize/extract/classify/rewrite/converse over NL; debugging refusals/cutoffs/streaming/tool-calls/tokens).
SKIP only when another provider is being worked on (overrides all triggers): OpenAI/GPT/Gemini/Llama/Mistral/Cohere/Ollama named in the query; OR `grep -rE 'openai|langchain_openai|google.generativeai|genai|mistralai|cohere|ollama'` over the project hits (run this grep FIRST if no provider named — don't Read the file).
- run: Launch and drive this project's app to see a change working. Use when asked to run, start, or screenshot the app, or to confirm a change works in the real app (not just tests). First looks for a project skill that already covers launching the app; otherwise falls back to built-in patterns per project type (CLI, server, TUI, Electron, browser-driven, library).
- init: Initialize a new CLAUDE.md file with codebase documentation
- review: Review a pull request
- security-review: Complete a security review of the pending changes on the current branch

deep-research frontend-design:frontend-design update-config keybindings-help verify code-review simplify fewer-permission-prompts loop schedule claude-api run init review security-review


I'll explore how `gorilla/sessions` is currently used in the codebase before designing the replacement plan.


Agent

Find all gorilla/sessions usage

Prompt:
Search the Go codebase at /Users/jan/prg/ClusterCockpit/cc-backend for all usage of the `github.com/gorilla/sessions` package (and any related `gorilla/securecookie` usage).

I need a comprehensive inventory. For each location report:
1. The file path and line numbers
2. The exact code using gorilla/sessions — session store creation, session.Get, session.Save, session.Values reads/writes, cookie options (MaxAge, Secure, HttpOnly, SameSite, Path), session flashes, etc.
3. How the session store is initialized and configured (keys, key rotation, cookie name, options)
4. Where sessions are created (login), read (auth middleware), and destroyed (logout)
5. What data is stored in session.Values (keys and types)
6. Any references in go.mod / go.sum
7. Any config options related to session lifetime, cookie settings, session keys in config files or env

Use grep for "gorilla/sessions", "sessions.NewCookieStore", "sessions.NewFilesystemStore", "session.Values", "securecookie", "SessionStore", ".Save(", "session", "Cookie" etc.

Report exact code snippets with file:line references. Be thorough — this is for a migration to github.com/alexedwards/scs/v2.


Explore auth and session flow

Prompt:
I'm planning to replace github.com/gorilla/sessions with github.com/alexedwards/scs/v2 in the Go codebase at /Users/jan/prg/ClusterCockpit/cc-backend.

Explore and report on the authentication and HTTP server setup so I understand integration points:

1. Read /Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go fully and report its structure — the Authentication struct, how sessions are created/read/destroyed, login/logout handlers, the auth middleware.

2. How is the HTTP router/server set up? Find where routes and middleware are wired (look in internal/api/rest.go, cmd/cc-backend/, internal/routerConfig or similar). I need to know where session middleware would be installed. Report the router library used (gorilla/mux? chi? net/http?).

3. How is config loaded? Find the config struct/schema for auth-related settings (session keys, max-age, cookie settings). Look in internal/config, pkg/schema, or config.json schema files.

4. How does the auth middleware extract the current user from a request? Trace the full path: cookie -> session -> user. Report the function names and files.

5. Are there other auth mechanisms (JWT, LDAP, OIDC) that interact with sessions? How do they set up a session after successful login?

Report exact file:line references and code snippets. Be thorough.


Perfect! Now I have a complete picture. Let me compile the comprehensive inventory:

## Comprehensive Gorilla/Sessions Inventory for ClusterCockpit Backend

### 1. **Dependencies in go.mod / go.sum**

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/go.mod:28`**
```
github.com/gorilla/sessions v1.4.0
```

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/go.sum:5-6`**
```
github.com/gorilla/sessions v1.4.0 h1:kpIYOp/oi6MG/REDACTED
github.com/gorilla/sessions v1.4.0/go.mod h1:FLWm50oby91+hl7p/REDACTED
```

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/go.sum:3-4`** (transitive dependency)
```
github.com/gorilla/securecookie v1.1.2 h1:REDACTED
github.com/gorilla/securecookie v1.1.2/go.mod h1:REDACTED
```

---

### 2. **Main Session Initialization & Store Management**

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go`**

#### Type Definition (Line 120-127):
```go
type Authentication struct {
	sessionStore   *sessions.CookieStore
	LdapAuth       *LdapAuthenticator
	JwtAuth        *JWTAuthenticator
	LocalAuth      *LocalAuthenticator
	authenticators []Authenticator
	SessionMaxAge  time.Duration
}
```

#### Import (Line 32):
```go
"github.com/gorilla/sessions"
```

#### Store Initialization (Lines 189-209):
```go
sessKey := os.Getenv("SESSION_KEY")
if sessKey == "" {
    if !config.Keys.DisableAuthentication {
        cclog.Fatal("environment variable 'SESSION_KEY' not set: refusing to start with an ephemeral session key. " +
            "Set SESSION_KEY in .env (base64-encoded 32 random bytes)...")
    }
    ephemeralKey := make([]byte, 32)
    if _, err := rand.Read(ephemeralKey); err != nil {
        cclog.Fatalf("Error while initializing authentication -> generating ephemeral session key failed: %v", err)
    }
    authInstance.sessionStore = sessions.NewCookieStore(ephemeralKey)  // Line 202
} else {
    keyBytes, err := base64.StdEncoding.DecodeString(sessKey)
    if err != nil {
        cclog.Fatal("Error while initializing authentication -> decoding session key failed")
    }
    authInstance.sessionStore = sessions.NewCookieStore(keyBytes)  // Line 208
}
```

---

### 3. **Session Configuration (Cookie Options)**

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go:321-354`** (SaveSession method):
```go
func (auth *Authentication) SaveSession(rw http.ResponseWriter, r *http.Request, user *schema.User) error {
    session, err := auth.sessionStore.New(r, "session")  // Line 322
    if err != nil {
        cclog.Errorf("session creation failed: %s", err.Error())
        http.Error(rw, err.Error(), http.StatusInternalServerError)
        return err
    }

    if auth.SessionMaxAge != 0 {
        session.Options.MaxAge = int(auth.SessionMaxAge.Seconds())  // Line 330
    }
    if r.TLS == nil && r.Header.Get("X-Forwarded-Proto") != "https" {
        cclog.Warn("Authenticating with unencrypted request. Session cookies will not have Secure flag set (insecure for production)")
        if r.Header.Get("X-Forwarded-Proto") == "" {
            cclog.Warn("If you are using a reverse proxy, make sure X-Forwarded-Proto is set")
        }
        session.Options.Secure = false  // Line 339
    }
    session.Options.SameSite = http.SameSiteLaxMode  // Line 341
    session.Options.HttpOnly = true  // Line 342

    // Store user data
    session.Values["username"] = user.Username  // Line 343
    session.Values["projects"] = user.Projects  // Line 344
    session.Values["roles"] = user.Roles  // Line 345
    session.Values["authSource"] = int(user.AuthSource)  // Line 346

    if err := auth.sessionStore.Save(r, rw, session); err != nil {  // Line 347
        cclog.Warnf("session save failed: %s", err.Error())
        http.Error(rw, err.Error(), http.StatusInternalServerError)
        return err
    }

    return nil
}
```

---

### 4. **Session Retrieval & Validation (Auth Middleware)**

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go:129-180`** (AuthViaSession method):
```go
func (auth *Authentication) AuthViaSession(
    rw http.ResponseWriter,
    r *http.Request,
) (*schema.User, error) {
    session, err := auth.sessionStore.Get(r, "session")  // Line 133
    if err != nil {
        cclog.Error("Error while getting session store")
        return nil, err
    }

    if session.IsNew {  // Line 139
        return nil, nil
    }

    // Validate session data with proper type checking
    username, ok := session.Values["username"].(string)  // Line 144
    if !ok || username == "" {
        cclog.Warn("Invalid session: missing or invalid username")
        session.Options.MaxAge = -1  // Line 148
        _ = auth.sessionStore.Save(r, rw, session)  // Line 149
        return nil, errors.New("invalid session data")
    }

    projects, ok := session.Values["projects"].([]string)  // Line 153
    if !ok {
        cclog.Warn("Invalid session: projects not found or invalid type, using empty list")
        projects = []string{}
    }

    roles, ok := session.Values["roles"].([]string)  // Line 159
    if !ok || len(roles) == 0 {
        cclog.Warn("Invalid session: missing or invalid roles")
        session.Options.MaxAge = -1  // Line 163
        _ = auth.sessionStore.Save(r, rw, session)  // Line 164
        return nil, errors.New("invalid session data")
    }

    authSourceInt, ok := session.Values["authSource"].(int)  // Line 168
    if !ok {
        authSourceInt = int(schema.AuthViaLocalPassword)
    }

    return &schema.User{
        Username:   username,
        Projects:   projects,
        Roles:      roles,
        AuthType:   schema.AuthSession,
        AuthSource: schema.AuthSource(authSourceInt),
    }, nil
}
```

---

### 5. **Session Destruction (Logout)**

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go:610-628`**:
```go
func (auth *Authentication) Logout(onsuccess http.Handler) http.Handler {
    return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
        session, err := auth.sessionStore.Get(r, "session")  // Line 612
        if err != nil {
            http.Error(rw, err.Error(), http.StatusInternalServerError)
            return
        }

        if !session.IsNew {  // Line 618
            session.Options.MaxAge = -1  // Line 619
            if err := auth.sessionStore.Save(r, rw, session); err != nil {  // Line 620
                http.Error(rw, err.Error(), http.StatusInternalServerError)
                return
            }
        }

        onsuccess.ServeHTTP(rw, r)
    })
}
```

**Logout endpoint registration** - File: `/Users/jan/prg/ClusterCockpit/cc-backend/cmd/cc-backend/server.go:226`:
```go
s.router.Post("/logout", authHandle.Logout(...).ServeHTTP)
```

---

### 6. **Session Data Structure**

The session stores exactly 4 pieces of user data:

| Key | Type | Source | Usage |
|-----|------|--------|-------|
| `"username"` | `string` | `user.Username` | User identifier |
| `"projects"` | `[]string` | `user.Projects` | List of project assignments |
| `"roles"` | `[]string` | `user.Roles` | User roles (RBAC) |
| `"authSource"` | `int` | `user.AuthSource` enum | Authentication method used |

---

### 7. **Configuration Sources**

**Session Key (Environment Variable):**
- File: `/Users/jan/prg/ClusterCockpit/cc-backend/.env:8`
  ```
  SESSION_KEY="REDACTED"
  ```
  Note: Must be base64-encoded 32 random bytes

**Session Max Age Configuration:**
- File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go:49`
  ```go
  SessionMaxAge string `json:"session-max-age"`
  ```

- File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go:145`
  ```go
  SessionMaxAge: "168h",  // Default: 7 days
  ```

- File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go:55-57`
  ```json
  "session-max-age": {
    "description": "Specifies for how long a session shall be valid as a string parsable by time.ParseDuration(). If 0 or empty, the session/token does not expire!",
    "type": "string"
  }
  ```

- File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go:211-212`
  ```go
  if d, err := time.ParseDuration(config.Keys.SessionMaxAge); err == nil {
      authInstance.SessionMaxAge = d
  }
  ```

---

### 8. **Authentication Middleware Integration**

**File: `/Users/jan/prg/ClusterCockpit/cc-backend/cmd/cc-backend/server.go:247-250`**:
Session-based auth is called in two auth handler chains:
1. `AuthFrontendAPI()` - For frontend API routes (line 589-607 in auth.go)
2. `AuthConfigAPI()` - For admin config API routes (line 568-586 in auth.go)

Both call `auth.AuthViaSession(rw, r)` to validate session cookies before granting access.

---

### 9. **Security Features Already Implemented**

- **HttpOnly flag**: Set to `true` (Line 342)
- **SameSite policy**: Set to `http.SameSiteLaxMode` (Line 341)
- **Secure flag**: Conditionally set based on HTTPS/X-Forwarded-Proto (Lines 332-340)
- **Key rotation**: SESSION_KEY is read from environment, allowing external rotation
- **CSRF defense**: Additional middleware checks Sec-Fetch-Site header (server.go:170-182)
- **Session invalidation**: MaxAge set to -1 for explicit logout and corrupted sessions

---

### 10. **Cookie Name**

The hardcoded cookie name is `"session"` (used in all `.Get()` and `.New()` calls):
- Line 133: `auth.sessionStore.Get(r, "session")`
- Line 322: `auth.sessionStore.New(r, "session")`
- Line 612: `auth.sessionStore.Get(r, "session")`

---

### 11. **Related but Separate: JWT Cookie Session**

File: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/jwtCookieSession.go:166-174`
This uses standard `http.Cookie` (not gorilla/sessions) for JWT tokens in cookies with configurable cookie name via `Keys.JwtConfig.CookieName`.

---

### Summary for Migration to alexedwards/scs/v2

The migration is well-scoped. The codebase uses gorilla/sessions in exactly one place (`internal/auth/auth.go`) with a single `CookieStore` instance that:
- Stores 4 user data fields (username, projects, roles, authSource)
- Uses the cookie name `"session"`
- Respects configurable MaxAge from environment (SESSION_KEY) and config.json (session-max-age)
- Has comprehensive error handling and session corruption detection
- Implements proper logout via MaxAge=-1

Prompt:
Search the Go codebase at /Users/jan/prg/ClusterCockpit/cc-backend for all usage of the `github.com/gorilla/sessions` package (and any related `gorilla/securecookie` usage).

I need a comprehensive inventory. For each location report:
1. The file path and line numbers
2. The exact code using gorilla/sessions — session store creation, session.Get, session.Save, session.Values reads/writes, cookie options (MaxAge, Secure, HttpOnly, SameSite, Path), session flashes, etc.
3. How the session store is initialized and configured (keys, key rotation, cookie name, options)
4. Where sessions are created (login), read (auth middleware), and destroyed (logout)
5. What data is stored in session.Values (keys and types)
6. Any references in go.mod / go.sum
7. Any config options related to session lifetime, cookie settings, session keys in config files or env

Use grep for "gorilla/sessions", "sessions.NewCookieStore", "sessions.NewFilesystemStore", "session.Values", "securecookie", "SessionStore", ".Save(", "session", "Cookie" etc.

Report exact code snippets with file:line references. Be thorough — this is for a migration to github.com/alexedwards/scs/v2.


Perfect! Now I have all the information I need. Let me compile my comprehensive report.

## Comprehensive Authentication and HTTP Server Setup Report

I've completed a thorough exploration of the authentication and HTTP server setup. Here's my detailed findings:

---

### 1. Authentication Structure (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go`)

**Authentication Struct** (lines 119-127):
```go
type Authentication struct {
    sessionStore   *sessions.CookieStore  // GORILLA SESSIONS - KEY FIELD
    LdapAuth       *LdapAuthenticator
    JwtAuth        *JWTAuthenticator
    LocalAuth      *LocalAuthenticator
    authenticators []Authenticator
    SessionMaxAge  time.Duration
}
```

**Key Session Management Methods:**

- **Session Creation (line 321-354)**: `SaveSession(rw http.ResponseWriter, r *http.Request, user *schema.User) error`
  - Creates new session via `auth.sessionStore.New(r, "session")` (line 322)
  - Sets MaxAge, Secure, SameSite, HttpOnly flags
  - Stores: `username`, `projects`, `roles`, `authSource` in session values
  - Saves via `auth.sessionStore.Save(r, rw, session)` (line 347)

- **Session Retrieval (line 129-180)**: `AuthViaSession(rw http.ResponseWriter, r *http.Request) (*schema.User, error)`
  - Gets session via `auth.sessionStore.Get(r, "session")` (line 133)
  - Validates username, projects, roles, authSource from `session.Values`
  - Returns nil for new sessions

- **Session Destruction (line 610-628)**: `Logout(onsuccess http.Handler) http.Handler`
  - Gets session via `auth.sessionStore.Get(r, "session")` (line 612)
  - Invalidates by setting `session.Options.MaxAge = -1` (line 619)
  - Saves invalidated session

**Initialization (lines 182-274)**: `Init(authCfg *json.RawMessage)`
- Reads `SESSION_KEY` environment variable (base64-encoded 32 random bytes) (line 189)
- Creates `sessions.CookieStore` with decoded key (line 202 or 208)
- Parses `SessionMaxAge` from config (line 211-213)
- Initializes all authenticators (LDAP, JWT, Local) as a chain (line 383-420)

---

### 2. HTTP Router Setup (`/Users/jan/prg/ClusterCockpit/cc-backend/cmd/cc-backend/server.go`)

**Router Library**: **go-chi/chi/v5** (import line 41)

**Server Structure** (lines 60-66):
```go
type Server struct {
    router        chi.Router
    server        *http.Server
    restAPIHandle *api.RestAPI
    natsAPIHandle *api.NatsAPI
}
```

**Router Initialization** (lines 92-390):
- `chi.NewRouter()` created in `NewServer()` (line 82)
- Global middleware registered BEFORE routes (lines 126-182):
  - Request logging
  - Gzip compression
  - Error recovery
  - CORS handling
  - Security headers (X-Content-Type-Options, X-Frame-Options, CSP, HSTS)
  - CSRF defense (Sec-Fetch-Site validation)

**Route Groups and Authentication Middleware:**

1. **Public routes** (lines 195-207):
   - `/login`, `/jwt-login`, `/logout`, `/imprint`, `/privacy`
   - No authentication required

2. **Secured Routes** (lines 247-273):
   - Uses middleware: `authHandle.Auth(next, onfailureResponse)` (line 250)
   - Wraps both session AND JWT auth together
   - Calls `AuthViaSession()` if JWT fails (auth.go:435)
   - GraphQL, search, and template routes mounted here

3. **REST API Routes** (lines 276-285):
   - Uses middleware: `authHandle.AuthAPI(next, onFailureResponse)` (line 281)
   - JWT-only authentication (`AuthViaJWT` first, no session fallback)
   - Mounted via `s.restAPIHandle.MountAPIRoutes(securedapi)` (line 284)

4. **Metric Store API Routes** (lines 288-295):
   - Uses middleware: `authHandle.AuthMetricStoreAPI(next, onFailureResponse)` (line 291)
   - JWT-only with specific role checks

5. **User API Routes** (lines 299-306):
   - Uses middleware: `authHandle.AuthUserAPI(next, onFailureResponse)` (line 302)

6. **Config API Routes** (lines 310-317):
   - Uses middleware: `authHandle.AuthConfigAPI(next, onFailureResponse)` (line 313)
   - Session-only auth (admin exclusive)

7. **Frontend API Routes** (lines 320-327):
   - Uses middleware: `authHandle.AuthFrontendAPI(next, onFailureResponse)` (line 323)
   - Session-only auth

**Key Auth Middleware Pattern** (lines 247-263):
```go
secured.Use(func(next http.Handler) http.Handler {
    return authHandle.Auth(next,
        func(rw http.ResponseWriter, r *http.Request, err error) {
            // on-failure handler: renders login.tmpl
        })
})
```

---

### 3. Configuration Loading

**Main Config** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/config.go`):
- `SessionMaxAge` field (line 49): `string` type, parsed as Go duration
- Default: `"168h"` (7 days) (line 145)
- Schema location: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/config/schema.go` (lines 55-58)
- Read from `config.json` during app startup

**Auth Config** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/schema.go`):
- Three top-level auth configs: `ldap`, `jwts`, `oidc`
- JWT config requires `max-age` (duration string)
- OIDC config optional but has `sync-user-on-login`, `update-user-on-login`
- LDAP config has `sync-user-on-login`, `update-user-on-login`

**Environment Variables**:
- `SESSION_KEY`: Base64-encoded 32 random bytes (required if auth enabled)
- `JWT_PUBLIC_KEY`, `JWT_PRIVATE_KEY`: Ed25519 keys for JWT signing
- `OID_CLIENT_ID`, `OID_CLIENT_SECRET`: OIDC client credentials
- `LDAP_ADMIN_PASSWORD`: For LDAP sync operations

---

### 4. User Extraction from Request (Cookie → Session → User)

**Full Extraction Path:**

1. **Middleware Auth Handler** (`auth.go:423-451`): `Auth(onsuccess, onfailure) http.Handler`
   - First tries: `auth.JwtAuth.AuthViaJWT(rw, r)` (line 428)
   - If no JWT, tries: `auth.AuthViaSession(rw, r)` (line 435)

2. **Session Extraction** (`auth.go:129-180`): `AuthViaSession(rw, r) (*schema.User, error)`
   ```
   Request Cookie ("session")
     → sessionStore.Get(r, "session")
     → session.Values["username"]
     → Builds *schema.User from session values
   ```
   - Reads cookie via gorilla sessions (line 133)
   - Extracts from `session.Values`: `username`, `projects`, `roles`, `authSource`
   - Returns fully-formed `*schema.User` object

3. **Context Injection** (`auth.go:404,443`):
   - `ctx := context.WithValue(r.Context(), repository.ContextUserKey, user)`
   - User injected into request context with key `ContextUserKey` ("user")

4. **User Retrieval in Handlers** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/user.go:505-513`):
   ```go
   func GetUserFromContext(ctx context.Context) *schema.User {
       x := ctx.Value(ContextUserKey)
       return x.(*schema.User)
   }
   ```

**Cookie Structure**:
- Name: `"session"`
- Contains: Encrypted gob-encoded session data (gorilla sessions format)
- Options set in `SaveSession()`:
  - `MaxAge`: From config `SessionMaxAge` (default 168h)
  - `HttpOnly`: true
  - `SameSite`: `http.SameSiteLaxMode` (Lax)
  - `Secure`: true if TLS or `X-Forwarded-Proto: https`, else false

---

### 5. Other Auth Mechanisms and Session Integration

All auth mechanisms follow the same Authenticator interface pattern and call `SaveSession()` after successful login.

**A. Local Password Authentication** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/local.go:36-48`)
- `Login()`: Validates bcrypt password, returns user
- Called via login handler chain (auth.go:356-420)
- Session created at line 399: `auth.SaveSession(rw, r, user)`

**B. LDAP Authentication** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/ldap.go:122-142`)
- `Login()`: LDAP bind authentication
- `CanLogin()`: Checks if `AuthViaLDAP`, or creates user if `SyncUserOnLogin` enabled
- Calls `handleLdapUser()` for sync/update (line 115, 318)
- Session created via standard login handler chain (auth.go:399)

**C. JWT Cookie Session Authentication** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/jwtCookieSession.go`)
- Cross-login via JWT in cookie (`CookieName` from config)
- `CanLogin()`: Reads JWT cookie, extracts user
- `Login()`: Verifies JWT signature
- Session created via standard login handler chain (auth.go:399)

**D. JWT Bearer Token Authentication** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/jwt.go:71-100`)
- `AuthViaJWT()`: Reads from `X-Auth-Token` or `Authorization: Bearer` header
- Parses Ed25519-signed JWT
- Extracts user claims directly (no session created)
- **Does NOT create sessions** — used for API clients

**E. OpenID Connect (OIDC)** (`/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/oidc.go`)
- `OAuth2Callback()`: Exchanges code for token, verifies ID token nonce
- Extracts claims: `preferred_username`, `name`, `realm_access.roles`, `resource_access` (Keycloak), `projects`
- Maps role names (`"user"`, `"admin"`, `"manager"`, `"support"`) to schema roles (line 238-248)
- Calls `handleOIDCUser()` for sync/update (line 268)
- **Creates session** at line 271: `oa.authentication.SaveSession(rw, r, user)`
- Redirects to `/` (line 278)

---

### 6. Session Middleware Installation Points

**Installation Pattern**: Middleware registered as global router middleware before route definitions:
- Line 126-182: Global middleware (logging, compression, recovery, CORS, headers, CSRF)
- Line 250-262: Auth middleware in secured group
- Line 281, 291, 302, 313, 323: Individual auth middlewares for API routes

**Session store is NOT middleware** — it's instance variable `auth.sessionStore` (gorilla CookieStore) used by auth handlers on-demand via `AuthViaSession()` and `SaveSession()` methods.

---

### 7. Gorilla Sessions Dependency

**File**: `/Users/jan/prg/ClusterCockpit/cc-backend/go.mod` (line 28)
```
github.com/gorilla/sessions v1.4.0
```

**Usage Summary**:
- Imported in `internal/auth/auth.go` (line 32)
- Single instance: `Authentication.sessionStore *sessions.CookieStore` (line 121)
- Initialized: `sessions.NewCookieStore(keyBytes)` (line 208)
- Only 8 call sites in the entire codebase:
  - `sessionStore.Get()` × 3 (lines 133, 322, 612)
  - `sessionStore.New()` × 1 (line 322)
  - `sessionStore.Save()` × 4 (lines 149, 164, 347, 620)

---

### Integration Summary for Replacement Planning

**Critical Integration Points for `alexedwards/scs/v2` replacement:**

1. **Session Store Initialization**: `auth.Init()` (lines 182-274) — creates CookieStore
2. **Session Creation**: `SaveSession()` (lines 321-354) — creates new session, stores user data
3. **Session Reading**: `AuthViaSession()` (lines 129-180) — reads and validates session
4. **Session Invalidation**: `Logout()` (lines 610-628) — destroys session
5. **Config Parameter**: `SessionMaxAge` from `config.Keys.SessionMaxAge` (line 211)
6. **Environment Variable**: `SESSION_KEY` for encryption (line 189)
7. **Middleware Integration**: Implicit via auth handlers in router (cmd/cc-backend/server.go:250, etc.)

All successful authentication paths (Local, LDAP, OIDC, JWT Cookie) call `SaveSession()` to persist user state. JWT Bearer tokens (API) bypass sessions entirely.

Prompt:
I'm planning to replace github.com/gorilla/sessions with github.com/alexedwards/scs/v2 in the Go codebase at /Users/jan/prg/ClusterCockpit/cc-backend.

Explore and report on the authentication and HTTP server setup so I understand integration points:

1. Read /Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go fully and report its structure — the Authentication struct, how sessions are created/read/destroyed, login/logout handlers, the auth middleware.

2. How is the HTTP router/server set up? Find where routes and middleware are wired (look in internal/api/rest.go, cmd/cc-backend/, internal/routerConfig or similar). I need to know where session middleware would be installed. Report the router library used (gorilla/mux? chi? net/http?).

3. How is config loaded? Find the config struct/schema for auth-related settings (session keys, max-age, cookie settings). Look in internal/config, pkg/schema, or config.json schema files.

4. How does the auth middleware extract the current user from a request? Trace the full path: cookie -> session -> user. Report the function names and files.

5. Are there other auth mechanisms (JWT, LDAP, OIDC) that interact with sessions? How do they set up a session after successful login?

Report exact file:line references and code snippets. Be thorough.


Both explorations are thorough. The migration is well-scoped to `internal/auth/auth.go` plus router wiring in `cmd/cc-backend/server.go`. Let me read the key files directly to nail down the integration details before designing.


115
116	// Keys holds the global authentication configuration
117	var Keys AuthConfig
118
119	// Authentication manages all authentication methods and session handling
120	type Authentication struct {
121		sessionStore   *sessions.CookieStore
122		LdapAuth       *LdapAuthenticator
123		JwtAuth        *JWTAuthenticator
124		LocalAuth      *LocalAuthenticator
125		authenticators []Authenticator
126		SessionMaxAge  time.Duration
127	}
128
129	func (auth *Authentication) AuthViaSession(
130		rw http.ResponseWriter,
131		r *http.Request,
132	) (*schema.User, error) {
133		session, err := auth.sessionStore.Get(r, "session")
134		if err != nil {
135			cclog.Error("Error while getting session store")
136			return nil, err
137		}
138
139		if session.IsNew {
140			return nil, nil
141		}
142
143		// Validate session data with proper type checking
144		username, ok := session.Values["username"].(string)
145		if !ok || username == "" {
146			cclog.Warn("Invalid session: missing or invalid username")
147			// Invalidate the corrupted session
148			session.Options.MaxAge = -1
149			_ = auth.sessionStore.Save(r, rw, session)
150			return nil, errors.New("invalid session data")
151		}
152
153		projects, ok := session.Values["projects"].([]string)
154		if !ok {
155			cclog.Warn("Invalid session: projects not found or invalid type, using empty list")
156			projects = []string{}
157		}
158
159		roles, ok := session.Values["roles"].([]string)
160		if !ok || len(roles) == 0 {
161			cclog.Warn("Invalid session: missing or invalid roles")
162			// Invalidate the corrupted session
163			session.Options.MaxAge = -1
164			_ = auth.sessionStore.Save(r, rw, session)
165			return nil, errors.New("invalid session data")
166		}
167
168		authSourceInt, ok := session.Values["authSource"].(int)
169		if !ok {
170			authSourceInt = int(schema.AuthViaLocalPassword)
171		}
172
173		return &schema.User{
174			Username:   username,
175			Projects:   projects,
176			Roles:      roles,
177			AuthType:   schema.AuthSession,
178			AuthSource: schema.AuthSource(authSourceInt),
179		}, nil
180	}
181
182	func Init(authCfg *json.RawMessage) {
183		initOnce.Do(func() {
184			authInstance = &Authentication{}
185
186			// Start background cleanup of rate limiters
187			startRateLimiterCleanup()
188
189			sessKey := os.Getenv("SESSION_KEY")
190			if sessKey == "" {
191				if !config.Keys.DisableAuthentication {
192					cclog.Fatal("environment variable 'SESSION_KEY' not set: refusing to start with an ephemeral session key. " +
193						"Set SESSION_KEY in .env (base64-encoded 32 random bytes); a random key would invalidate all sessions on every restart " +
194						"and prevent sessions from validating across replicas.")
195				}
196				// Authentication is disabled: no user sessions are issued, so an
197				// ephemeral random key is sufficient and SESSION_KEY is not required.
198				ephemeralKey := make([]byte, 32)
199				if _, err := rand.Read(ephemeralKey); err != nil {
200					cclog.Fatalf("Error while initializing authentication -> generating ephemeral session key failed: %v", err)
201				}
202				authInstance.sessionStore = sessions.NewCookieStore(ephemeralKey)
203			} else {
204				keyBytes, err := base64.StdEncoding.DecodeString(sessKey)
205				if err != nil {
206					cclog.Fatal("Error while initializing authentication -> decoding session key failed")
207				}
208				authInstance.sessionStore = sessions.NewCookieStore(keyBytes)
209			}
210
211			if d, err := time.ParseDuration(config.Keys.SessionMaxAge); err == nil {
212				authInstance.SessionMaxAge = d
213			}
214
215			// When authentication is disabled no authenticators are required; the
216			// session store created above is enough for the server to run with a
217			// valid (non-nil) auth instance.
218			if config.Keys.DisableAuthentication {
219				return
220			}
221
222			if authCfg == nil {
223				return
224			}
225
226			config.Validate(configSchema, *authCfg)
227			dec := json.NewDecoder(bytes.NewReader(*authCfg))
228			dec.DisallowUnknownFields()
229			if err := dec.Decode(&Keys); err != nil {
230				cclog.Errorf("error while decoding ldap config: %v", err)
231			}
232
233			if Keys.LdapConfig != nil {
234				ldapAuth := &LdapAuthenticator{}
235				if err := ldapAuth.Init(); err != nil {
236					cclog.Warn("Error while initializing authentication -> ldapAuth init failed")
237				} else {
238					authInstance.LdapAuth = ldapAuth
239					authInstance.authenticators = append(authInstance.authenticators, authInstance.LdapAuth)
240				}
241			} else {
242				cclog.Info("Missing LDAP configuration: No LDAP support!")
243			}
244
245			if Keys.JwtConfig != nil {
246				authInstance.JwtAuth = &JWTAuthenticator{}
247				if err := authInstance.JwtAuth.Init(); err != nil {
248					cclog.Fatal("Error while initializing authentication -> jwtAuth init failed")
249				}
250
251				jwtSessionAuth := &JWTSessionAuthenticator{}
252				if err := jwtSessionAuth.Init(); err != nil {
253					cclog.Info("jwtSessionAuth init failed: No JWT login support!")
254				} else {
255					authInstance.authenticators = append(authInstance.authenticators, jwtSessionAuth)
256				}
257
258				jwtCookieSessionAuth := &JWTCookieSessionAuthenticator{}
259				if err := jwtCookieSessionAuth.Init(); err != nil {
260					cclog.Info("jwtCookieSessionAuth init failed: No JWT cookie login support!")
261				} else {
262					authInstance.authenticators = append(authInstance.authenticators, jwtCookieSessionAuth)
263				}
264			} else {
265				cclog.Info("Missing JWT configuration: No JWT token support!")
266			}
267
268			authInstance.LocalAuth = &LocalAuthenticator{}
269			if err := authInstance.LocalAuth.Init(); err != nil {
270				cclog.Fatal("Error while initializing authentication -> localAuth init failed")
271			}
272			authInstance.authenticators = append(authInstance.authenticators, authInstance.LocalAuth)
273		})
274	}
275
276	func GetAuthInstance() *Authentication {
277		if authInstance == nil {
278			cclog.Fatal("Authentication module not initialized!")
279		}
280
281		return authInstance
282	}
283
284	// handleUserSync syncs or updates a user in the database based on configuration.
285	// This is used for LDAP, JWT and OIDC authentications when syncUserOnLogin or updateUserOnLogin is enabled.
286	func handleUserSync(user *schema.User, syncUserOnLogin, updateUserOnLogin bool) {
287		r := repository.GetUserRepository()
288		dbUser, err := r.GetUser(user.Username)
289
290		if err != nil && err != sql.ErrNoRows {
291			cclog.Errorf("Error while loading user '%s': %v", user.Username, err)
292			return
293		}
294
295		if err == sql.ErrNoRows && syncUserOnLogin { // Add new user
296			if err := r.AddUser(user); err != nil {
297				cclog.Errorf("Error while adding user '%s' to DB: %v", user.Username, err)
298			}
299		} else if err == nil && updateUserOnLogin { // Update existing user
300			if err := r.UpdateUser(dbUser, user); err != nil {
301				cclog.Errorf("Error while updating user '%s' in DB: %v", dbUser.Username, err)
302			}
303		}
304	}
305
306	// handleTokenUser syncs JWT token user with database
307	func handleTokenUser(tokenUser *schema.User) {
308		handleUserSync(tokenUser, Keys.JwtConfig.SyncUserOnLogin, Keys.JwtConfig.UpdateUserOnLogin)
309	}
310
311	// handleOIDCUser syncs OIDC user with database
312	func handleOIDCUser(OIDCUser *schema.User) {
313		handleUserSync(OIDCUser, Keys.OpenIDConfig.SyncUserOnLogin, Keys.OpenIDConfig.UpdateUserOnLogin)
314	}
315
316	// handleLdapUser syncs LDAP user with database
317	func handleLdapUser(ldapUser *schema.User) {
318		handleUserSync(ldapUser, Keys.LdapConfig.SyncUserOnLogin, Keys.LdapConfig.UpdateUserOnLogin)
319	}
320
321	func (auth *Authentication) SaveSession(rw http.ResponseWriter, r *http.Request, user *schema.User) error {
322		session, err := auth.sessionStore.New(r, "session")
323		if err != nil {
324			cclog.Errorf("session creation failed: %s", err.Error())
325			http.Error(rw, err.Error(), http.StatusInternalServerError)
326			return err
327		}
328
329		if auth.SessionMaxAge != 0 {
330			session.Options.MaxAge = int(auth.SessionMaxAge.Seconds())
331		}
332		if r.TLS == nil && r.Header.Get("X-Forwarded-Proto") != "https" {
333			// If neither TLS or an encrypted reverse proxy are used, do not mark cookies as secure.
334			cclog.Warn("Authenticating with unencrypted request. Session cookies will not have Secure flag set (insecure for production)")
335			if r.Header.Get("X-Forwarded-Proto") == "" {
336				// This warning will not be printed if e.g. X-Forwarded-Proto == http
337				cclog.Warn("If you are using a reverse proxy, make sure X-Forwarded-Proto is set")
338			}
339			session.Options.Secure = false
340		}
341		session.Options.SameSite = http.SameSiteLaxMode
342		session.Options.HttpOnly = true
343		session.Values["username"] = user.Username
344		session.Values["projects"] = user.Projects
345		session.Values["roles"] = user.Roles
346		session.Values["authSource"] = int(user.AuthSource)
347		if err := auth.sessionStore.Save(r, rw, session); err != nil {
348			cclog.Warnf("session save failed: %s", err.Error())
349			http.Error(rw, err.Error(), http.StatusInternalServerError)
350			return err
351		}
352
353		return nil
354	}
355
356	func (auth *Authentication) Login(
357		onfailure func(rw http.ResponseWriter, r *http.Request, loginErr error),
358	) http.Handler {
359		return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
360			ip, _, err := net.SplitHostPort(r.RemoteAddr)
361			if err != nil {
362				ip = r.RemoteAddr
363			}
364
365			username := r.FormValue("username")
366
367			limiter := getIPUserLimiter(ip, username)
368			if !limiter.Allow() {
369				cclog.Warnf("AUTH/RATE > Too many login attempts for combination IP: %s, Username: %s", ip, username)
370				onfailure(rw, r, errors.New("too many login attempts, try again in a few minutes"))
371				return
372			}
373
374			var dbUser *schema.User
375			if username != "" {
376				var err error
377				dbUser, err = repository.GetUserRepository().GetUser(username)
378				if err != nil && err != sql.ErrNoRows {
379					cclog.Errorf("Error while loading user '%v'", username)
380				}
381			}
382
383			for _, authenticator := range auth.authenticators {
384				var ok bool
385				var user *schema.User
386				if user, ok = authenticator.CanLogin(dbUser, username, rw, r); !ok {
387					continue
388				} else {
389					cclog.Debugf("Can login with user %v", user)
390				}
391
392				user, err := authenticator.Login(user, rw, r)
393				if err != nil {
394					cclog.Warnf("user login failed: %s", err.Error())

// Keys holds the global authentication configuration
var Keys AuthConfig

// Authentication manages all authentication methods and session handling
type Authentication struct {
	sessionStore   *sessions.CookieStore
	LdapAuth       *LdapAuthenticator
	JwtAuth        *JWTAuthenticator
	LocalAuth      *LocalAuthenticator
	authenticators []Authenticator
	SessionMaxAge  time.Duration
}

func (auth *Authentication) AuthViaSession(
	rw http.ResponseWriter,
	r *http.Request,
) (*schema.User, error) {
	session, err := auth.sessionStore.Get(r, "session")
	if err != nil {
		cclog.Error("Error while getting session store")
		return nil, err
	}

	if session.IsNew {
		return nil, nil
	}

	// Validate session data with proper type checking
	username, ok := session.Values["username"].(string)
	if !ok || username == "" {
		cclog.Warn("Invalid session: missing or invalid username")
		// Invalidate the corrupted session
		session.Options.MaxAge = -1
		_ = auth.sessionStore.Save(r, rw, session)
		return nil, errors.New("invalid session data")
	}

	projects, ok := session.Values["projects"].([]string)
	if !ok {
		cclog.Warn("Invalid session: projects not found or invalid type, using empty list")
		projects = []string{}
	}

	roles, ok := session.Values["roles"].([]string)
	if !ok || len(roles) == 0 {
		cclog.Warn("Invalid session: missing or invalid roles")
		// Invalidate the corrupted session
		session.Options.MaxAge = -1
		_ = auth.sessionStore.Save(r, rw, session)
		return nil, errors.New("invalid session data")
	}

	authSourceInt, ok := session.Values["authSource"].(int)
	if !ok {
		authSourceInt = int(schema.AuthViaLocalPassword)
	}

	return &schema.User{
		Username:   username,
		Projects:   projects,
		Roles:      roles,
		AuthType:   schema.AuthSession,
		AuthSource: schema.AuthSource(authSourceInt),
	}, nil
}

func Init(authCfg *json.RawMessage) {
	initOnce.Do(func() {
		authInstance = &Authentication{}

		// Start background cleanup of rate limiters
		startRateLimiterCleanup()

		sessKey := os.Getenv("SESSION_KEY")
		if sessKey == "" {
			if !config.Keys.DisableAuthentication {
				cclog.Fatal("environment variable 'SESSION_KEY' not set: refusing to start with an ephemeral session key. " +
					"Set SESSION_KEY in .env (base64-encoded 32 random bytes); a random key would invalidate all sessions on every restart " +
					"and prevent sessions from validating across replicas.")
			}
			// Authentication is disabled: no user sessions are issued, so an
			// ephemeral random key is sufficient and SESSION_KEY is not required.
			ephemeralKey := make([]byte, 32)
			if _, err := rand.Read(ephemeralKey); err != nil {
				cclog.Fatalf("Error while initializing authentication -> generating ephemeral session key failed: %v", err)
			}
			authInstance.sessionStore = sessions.NewCookieStore(ephemeralKey)
		} else {
			keyBytes, err := base64.StdEncoding.DecodeString(sessKey)
			if err != nil {
				cclog.Fatal("Error while initializing authentication -> decoding session key failed")
			}
			authInstance.sessionStore = sessions.NewCookieStore(keyBytes)
		}

		if d, err := time.ParseDuration(config.Keys.SessionMaxAge); err == nil {
			authInstance.SessionMaxAge = d
		}

		// When authentication is disabled no authenticators are required; the
		// session store created above is enough for the server to run with a
		// valid (non-nil) auth instance.
		if config.Keys.DisableAuthentication {
			return
		}

		if authCfg == nil {
			return
		}

		config.Validate(configSchema, *authCfg)
		dec := json.NewDecoder(bytes.NewReader(*authCfg))
		dec.DisallowUnknownFields()
		if err := dec.Decode(&Keys); err != nil {
			cclog.Errorf("error while decoding ldap config: %v", err)
		}

		if Keys.LdapConfig != nil {
			ldapAuth := &LdapAuthenticator{}
			if err := ldapAuth.Init(); err != nil {
				cclog.Warn("Error while initializing authentication -> ldapAuth init failed")
			} else {
				authInstance.LdapAuth = ldapAuth
				authInstance.authenticators = append(authInstance.authenticators, authInstance.LdapAuth)
			}
		} else {
			cclog.Info("Missing LDAP configuration: No LDAP support!")
		}

		if Keys.JwtConfig != nil {
			authInstance.JwtAuth = &JWTAuthenticator{}
			if err := authInstance.JwtAuth.Init(); err != nil {
				cclog.Fatal("Error while initializing authentication -> jwtAuth init failed")
			}

			jwtSessionAuth := &JWTSessionAuthenticator{}
			if err := jwtSessionAuth.Init(); err != nil {
				cclog.Info("jwtSessionAuth init failed: No JWT login support!")
			} else {
				authInstance.authenticators = append(authInstance.authenticators, jwtSessionAuth)
			}

			jwtCookieSessionAuth := &JWTCookieSessionAuthenticator{}
			if err := jwtCookieSessionAuth.Init(); err != nil {
				cclog.Info("jwtCookieSessionAuth init failed: No JWT cookie login support!")
			} else {
				authInstance.authenticators = append(authInstance.authenticators, jwtCookieSessionAuth)
			}
		} else {
			cclog.Info("Missing JWT configuration: No JWT token support!")
		}

		authInstance.LocalAuth = &LocalAuthenticator{}
		if err := authInstance.LocalAuth.Init(); err != nil {
			cclog.Fatal("Error while initializing authentication -> localAuth init failed")
		}
		authInstance.authenticators = append(authInstance.authenticators, authInstance.LocalAuth)
	})
}

func GetAuthInstance() *Authentication {
	if authInstance == nil {
		cclog.Fatal("Authentication module not initialized!")
	}

	return authInstance
}

// handleUserSync syncs or updates a user in the database based on configuration.
// This is used for LDAP, JWT and OIDC authentications when syncUserOnLogin or updateUserOnLogin is enabled.
func handleUserSync(user *schema.User, syncUserOnLogin, updateUserOnLogin bool) {
	r := repository.GetUserRepository()
	dbUser, err := r.GetUser(user.Username)

	if err != nil && err != sql.ErrNoRows {
		cclog.Errorf("Error while loading user '%s': %v", user.Username, err)
		return
	}

	if err == sql.ErrNoRows && syncUserOnLogin { // Add new user
		if err := r.AddUser(user); err != nil {
			cclog.Errorf("Error while adding user '%s' to DB: %v", user.Username, err)
		}
	} else if err == nil && updateUserOnLogin { // Update existing user
		if err := r.UpdateUser(dbUser, user); err != nil {
			cclog.Errorf("Error while updating user '%s' in DB: %v", dbUser.Username, err)
		}
	}
}

// handleTokenUser syncs JWT token user with database
func handleTokenUser(tokenUser *schema.User) {
	handleUserSync(tokenUser, Keys.JwtConfig.SyncUserOnLogin, Keys.JwtConfig.UpdateUserOnLogin)
}

// handleOIDCUser syncs OIDC user with database
func handleOIDCUser(OIDCUser *schema.User) {
	handleUserSync(OIDCUser, Keys.OpenIDConfig.SyncUserOnLogin, Keys.OpenIDConfig.UpdateUserOnLogin)
}

// handleLdapUser syncs LDAP user with database
func handleLdapUser(ldapUser *schema.User) {
	handleUserSync(ldapUser, Keys.LdapConfig.SyncUserOnLogin, Keys.LdapConfig.UpdateUserOnLogin)
}

func (auth *Authentication) SaveSession(rw http.ResponseWriter, r *http.Request, user *schema.User) error {
	session, err := auth.sessionStore.New(r, "session")
	if err != nil {
		cclog.Errorf("session creation failed: %s", err.Error())
		http.Error(rw, err.Error(), http.StatusInternalServerError)
		return err
	}

	if auth.SessionMaxAge != 0 {
		session.Options.MaxAge = int(auth.SessionMaxAge.Seconds())
	}
	if r.TLS == nil && r.Header.Get("X-Forwarded-Proto") != "https" {
		// If neither TLS or an encrypted reverse proxy are used, do not mark cookies as secure.
		cclog.Warn("Authenticating with unencrypted request. Session cookies will not have Secure flag set (insecure for production)")
		if r.Header.Get("X-Forwarded-Proto") == "" {
			// This warning will not be printed if e.g. X-Forwarded-Proto == http
			cclog.Warn("If you are using a reverse proxy, make sure X-Forwarded-Proto is set")
		}
		session.Options.Secure = false
	}
	session.Options.SameSite = http.SameSiteLaxMode
	session.Options.HttpOnly = true
	session.Values["username"] = user.Username
	session.Values["projects"] = user.Projects
	session.Values["roles"] = user.Roles
	session.Values["authSource"] = int(user.AuthSource)
	if err := auth.sessionStore.Save(r, rw, session); err != nil {
		cclog.Warnf("session save failed: %s", err.Error())
		http.Error(rw, err.Error(), http.StatusInternalServerError)
		return err
	}

	return nil
}

func (auth *Authentication) Login(
	onfailure func(rw http.ResponseWriter, r *http.Request, loginErr error),
) http.Handler {
	return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
		ip, _, err := net.SplitHostPort(r.RemoteAddr)
		if err != nil {
			ip = r.RemoteAddr
		}

		username := r.FormValue("username")

		limiter := getIPUserLimiter(ip, username)
		if !limiter.Allow() {
			cclog.Warnf("AUTH/RATE > Too many login attempts for combination IP: %s, Username: %s", ip, username)
			onfailure(rw, r, errors.New("too many login attempts, try again in a few minutes"))
			return
		}

		var dbUser *schema.User
		if username != "" {
			var err error
			dbUser, err = repository.GetUserRepository().GetUser(username)
			if err != nil && err != sql.ErrNoRows {
				cclog.Errorf("Error while loading user '%v'", username)
			}
		}

		for _, authenticator := range auth.authenticators {
			var ok bool
			var user *schema.User
			if user, ok = authenticator.CanLogin(dbUser, username, rw, r); !ok {
				continue
			} else {
				cclog.Debugf("Can login with user %v", user)
			}

			user, err := authenticator.Login(user, rw, r)
			if err != nil {
				cclog.Warnf("user login failed: %s", err.Error())


120			})
121		}
122
123		authHandle := auth.GetAuthInstance()
124
125		// Middleware must be defined before routes in chi
126		s.router.Use(func(next http.Handler) http.Handler {
127			return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
128				start := time.Now()
129				ww := middleware.NewWrapResponseWriter(rw, r.ProtoMajor)
130				next.ServeHTTP(ww, r)
131				cclog.Debugf("%s %s (%d, %.02fkb, %dms)",
132					r.Method, r.URL.RequestURI(),
133					ww.Status(), float32(ww.BytesWritten())/1024,
134					time.Since(start).Milliseconds())
135			})
136		})
137		s.router.Use(middleware.Compress(5))
138		s.router.Use(middleware.Recoverer)
139		s.router.Use(cors.Handler(cors.Options{
140			AllowCredentials: false,
141			AllowedHeaders:   []string{"X-Requested-With", "Content-Type", "Authorization", "Origin"},
142			AllowedMethods:   []string{"GET", "POST", "HEAD", "OPTIONS"},
143			AllowedOrigins:   []string{"*"},
144		}))
145		s.router.Use(func(next http.Handler) http.Handler {
146			return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
147				h := rw.Header()
148				h.Set("X-Content-Type-Options", "nosniff")
149				h.Set("X-Frame-Options", "DENY")
150				h.Set("Referrer-Policy", "same-origin")
151				// Conservative CSP: blocks clickjacking (frame-ancestors), plugin
152				// content (object-src) and <base> injection (base-uri) without
153				// restricting scripts/styles, so it cannot break the self-hosted
154				// SPA which relies on inline scripts. A full script-src policy needs
155				// per-template nonces and should be added separately.
156				h.Set("Content-Security-Policy", "frame-ancestors 'none'; object-src 'none'; base-uri 'self'")
157				if r.TLS != nil || r.Header.Get("X-Forwarded-Proto") == "https" {
158					h.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains")
159				}
160				next.ServeHTTP(rw, r)
161			})
162		})
163
164		// CSRF defense-in-depth on top of the SameSite=Lax session cookie: reject
165		// cross-site state-changing requests. Modern browsers set Sec-Fetch-Site on
166		// every request, so this stops a malicious site from driving cookie-
167		// authenticated POST/PUT/DELETE/PATCH calls. It fails open when the header is
168		// absent or not "cross-site", so non-browser API clients and the same-origin
169		// SPA are unaffected.
170		s.router.Use(func(next http.Handler) http.Handler {
171			return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
172				switch r.Method {
173				case http.MethodGet, http.MethodHead, http.MethodOptions, http.MethodTrace:
174				default:
175					if r.Header.Get("Sec-Fetch-Site") == "cross-site" {
176						http.Error(rw, "cross-site request blocked", http.StatusForbidden)
177						return
178					}
179				}
180				next.ServeHTTP(rw, r)
181			})
182		})
183
184		s.restAPIHandle = api.New()
185
186		info := map[string]any{}
187		info["hasOpenIDConnect"] = false
188
189		if auth.Keys.OpenIDConfig != nil {
190			openIDConnect := auth.NewOIDC(authHandle)
191			openIDConnect.RegisterEndpoints(s.router)
192			info["hasOpenIDConnect"] = true
193		}
194
195		s.router.Get("/login", func(rw http.ResponseWriter, r *http.Request) {
196			rw.Header().Add("Content-Type", "text/html; charset=utf-8")
197			cclog.Debugf("##%v##", info)
198			web.RenderTemplate(rw, "login.tmpl", &web.Page{Title: "Login", Build: buildInfo, Infos: info})
199		})
200		s.router.HandleFunc("/imprint", func(rw http.ResponseWriter, r *http.Request) {
201			rw.Header().Add("Content-Type", "text/html; charset=utf-8")
202			web.RenderTemplate(rw, "imprint.tmpl", &web.Page{Title: "Imprint", Build: buildInfo})
203		})
204		s.router.HandleFunc("/privacy", func(rw http.ResponseWriter, r *http.Request) {
205			rw.Header().Add("Content-Type", "text/html; charset=utf-8")
206			web.RenderTemplate(rw, "privacy.tmpl", &web.Page{Title: "Privacy", Build: buildInfo})
207		})
208
209		if !config.Keys.DisableAuthentication {
210			// Create login failure handler (used by both /login and /jwt-login)
211			loginFailureHandler := func(rw http.ResponseWriter, r *http.Request, err error) {
212				rw.Header().Add("Content-Type", "text/html; charset=utf-8")
213				rw.WriteHeader(http.StatusUnauthorized)
214				web.RenderTemplate(rw, "login.tmpl", &web.Page{
215					Title:   "Login failed - ClusterCockpit",
216					MsgType: "alert-warning",
217					Message: err.Error(),
218					Build:   buildInfo,
219					Infos:   info,
220				})
221			}
222
223			s.router.Post("/login", authHandle.Login(loginFailureHandler).ServeHTTP)
224			s.router.HandleFunc("/jwt-login", authHandle.Login(loginFailureHandler).ServeHTTP)
225
226			s.router.Post("/logout", authHandle.Logout(
227				http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
228					rw.Header().Add("Content-Type", "text/html; charset=utf-8")
229					rw.WriteHeader(http.StatusOK)
230					web.RenderTemplate(rw, "login.tmpl", &web.Page{
231						Title:   "Bye - ClusterCockpit",
232						MsgType: "alert-info",
233						Message: "Logout successful",
234						Build:   buildInfo,
235						Infos:   info,
236					})
237				})).ServeHTTP)
238		}
239
240		if flagDev {
241			s.router.Handle("/playground", playground.Handler("GraphQL playground", "/query"))
242			s.router.Get("/swagger/*", httpSwagger.Handler(
243				httpSwagger.URL("http://"+config.Keys.Addr+"/swagger/doc.json")))
244		}
245
246		// Secured routes (require authentication)
247		s.router.Group(func(secured chi.Router) {
248			if !config.Keys.DisableAuthentication {
249				secured.Use(func(next http.Handler) http.Handler {
250					return authHandle.Auth(
251						next,
252						func(rw http.ResponseWriter, r *http.Request, err error) {
253							rw.WriteHeader(http.StatusUnauthorized)
254							web.RenderTemplate(rw, "login.tmpl", &web.Page{
255								Title:    "Authentication failed - ClusterCockpit",
256								MsgType:  "alert-danger",
257								Message:  err.Error(),
258								Build:    buildInfo,
259								Infos:    info,
260								Redirect: r.RequestURI,
261							})
262						})
263				})
264			}
265
266			secured.Handle("/query", graphQLServer)
267
268			secured.HandleFunc("/search", func(rw http.ResponseWriter, r *http.Request) {
269				routerConfig.HandleSearchBar(rw, r, buildInfo)
270			})
271
272			routerConfig.SetupRoutes(secured, buildInfo)
273		})
274
275		// API routes (JWT token auth)
276		s.router.Route("/api", func(apiRouter chi.Router) {
277			// Main API routes with API auth
278			apiRouter.Group(func(securedapi chi.Router) {
279				if !config.Keys.DisableAuthentication {
280					securedapi.Use(func(next http.Handler) http.Handler {
281						return authHandle.AuthAPI(next, onFailureResponse)
282					})
283				}
284				s.restAPIHandle.MountAPIRoutes(securedapi)
285			})
286
287			// Metric store API routes with separate auth
288			apiRouter.Group(func(metricstoreapi chi.Router) {
289				if !config.Keys.DisableAuthentication {
290					metricstoreapi.Use(func(next http.Handler) http.Handler {
291						return authHandle.AuthMetricStoreAPI(next, onFailureResponse)
292					})
293				}
294				s.restAPIHandle.MountMetricStoreAPIRoutes(metricstoreapi)
295			})
296		})
297
298		// User API routes
299		s.router.Route("/userapi", func(userapi chi.Router) {
300			if !config.Keys.DisableAuthentication {
301				userapi.Use(func(next http.Handler) http.Handler {
302					return authHandle.AuthUserAPI(next, onFailureResponse)
303				})
304			}
305			s.restAPIHandle.MountUserAPIRoutes(userapi)
306		})
307
308		// Config API routes (uses Group with full paths to avoid shadowing
309		// the /config page route that is registered in the secured group)
310		s.router.Group(func(configapi chi.Router) {
311			if !config.Keys.DisableAuthentication {
312				configapi.Use(func(next http.Handler) http.Handler {
313					return authHandle.AuthConfigAPI(next, onFailureResponse)
314				})
315			}
316			s.restAPIHandle.MountConfigAPIRoutes(configapi)
317		})
318
319		// Frontend API routes
320		s.router.Route("/frontend", func(frontendapi chi.Router) {
321			if !config.Keys.DisableAuthentication {
322				frontendapi.Use(func(next http.Handler) http.Handler {
323					return authHandle.AuthFrontendAPI(next, onFailureResponse)
324				})
325			}
326			s.restAPIHandle.MountFrontendAPIRoutes(frontendapi)
327		})
328
329		if config.Keys.APISubjects != nil {
330			s.natsAPIHandle = api.NewNatsAPI()
331			if err := s.natsAPIHandle.StartSubscriptions(); err != nil {
332				return fmt.Errorf("starting NATS subscriptions: %w", err)
333			}
334		}
335
336		// 404 handler for pages and API routes
337		notFoundHandler := func(rw http.ResponseWriter, r *http.Request) {
338			if strings.HasPrefix(r.URL.Path, "/api/") || strings.HasPrefix(r.URL.Path, "/userapi/") ||
339				strings.HasPrefix(r.URL.Path, "/frontend/") || strings.HasPrefix(r.URL.Path, "/config/") {
340				rw.Header().Set("Content-Type", "application/json")
341				rw.WriteHeader(http.StatusNotFound)
342				json.NewEncoder(rw).Encode(map[string]string{
343					"status": "Resource not found",
344					"error":  "the requested endpoint does not exist",
345				})
346				return
347			}
348			rw.Header().Set("Content-Type", "text/html; charset=utf-8")
349			rw.WriteHeader(http.StatusNotFound)
350			web.RenderTemplate(rw, "404.tmpl", &web.Page{
351				Title: "Page Not Found",
352				Build: buildInfo,
353			})
354		}
355
356		// Set NotFound on the router so chi uses it for all unmatched routes,
357		// including those under subrouters like /api, /userapi, /frontend, etc.
358		s.router.NotFound(notFoundHandler)
359
360		if config.Keys.EmbedStaticFiles {
361			if i, err := os.Stat("./var/img"); err == nil {
362				if i.IsDir() {
363					cclog.Info("Use local directory for static images")
364					s.router.Handle("/img/*", http.StripPrefix("/img/", http.FileServer(http.Dir("./var/img"))))
365				}
366			}
367			fileServer := http.StripPrefix("/", web.ServeFiles())
368			s.router.Handle("/*", http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
369				if web.StaticFileExists(r.URL.Path) {
370					fileServer.ServeHTTP(rw, r)
371					return
372				}
373				notFoundHandler(rw, r)
374			}))
375		} else {
376			staticDir := http.Dir(config.Keys.StaticFiles)
377			fileServer := http.FileServer(staticDir)
378			s.router.Handle("/*", http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
379				f, err := staticDir.Open(r.URL.Path)
380				if err == nil {
381					f.Close()
382					fileServer.ServeHTTP(rw, r)
383					return
384				}
385				notFoundHandler(rw, r)
386			}))
387		}
388
389		return nil
390	}
391
392	// Server timeout defaults (in seconds)
393	const (
394		defaultReadHeaderTimeout = 20
395		defaultWriteTimeout      = 20
396	)
397
398	func (s *Server) Start(ctx context.Context) error {
399		// Use configurable timeouts with defaults
400		readHeaderTimeout := time.Duration(defaultReadHeaderTimeout) * time.Second
401		writeTimeout := time.Duration(defaultWriteTimeout) * time.Second
402
403		s.server = &http.Server{
404			ReadHeaderTimeout: readHeaderTimeout,
405			WriteTimeout:      writeTimeout,
406			Handler:           s.router,
407			Addr:              config.Keys.Addr,
408		}
409
410		// Start http or https server
411		listener, err := net.Listen("tcp", config.Keys.Addr)
412		if err != nil {
413			return fmt.Errorf("starting listener on '%s': %w", config.Keys.Addr, err)
414		}
415
416		if !strings.HasSuffix(config.Keys.Addr, ":80") && config.Keys.RedirectHTTPTo != "" {
417			go func() {
418				if err := http.ListenAndServe(":80", http.RedirectHandler(config.Keys.RedirectHTTPTo, http.StatusMovedPermanently)); err != nil {
419					cclog.Errorf("HTTP-to-HTTPS redirect listener on :80 failed: %v", err)
420				}
421			}()
422		}
423
424		if config.Keys.HTTPSCertFile != "" && config.Keys.HTTPSKeyFile != "" {
425			cert, err := tls.LoadX509KeyPair(
426				config.Keys.HTTPSCertFile, config.Keys.HTTPSKeyFile)
427			if err != nil {
428				return fmt.Errorf("loading X509 keypair (check 'https-cert-file' and 'https-key-file' in config.json): %w", err)
429			}
430			listener = tls.NewListener(listener, &tls.Config{
431				Certificates: []tls.Certificate{cert},
432				CipherSuites: []uint16{
433					tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
434					tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
435				},
436				MinVersion:               tls.VersionTLS12,
437				PreferServerCipherSuites: true,
438			})
439			cclog.Infof("HTTPS server listening at %s...", config.Keys.Addr)
440		} else {
441			cclog.Infof("HTTP server listening at %s...", config.Keys.Addr)
442		}
443		//
444		// Because this program will want to bind to a privileged port (like 80), the listener must
445		// be established first, then the user can be changed, and after that,
446		// the actual http server can be started.
447		if err := runtime.DropPrivileges(config.Keys.Group, config.Keys.User); err != nil {
448			return fmt.Errorf("dropping privileges: %w", err)
449		}
450
451		if err = s.server.Serve(listener); err != nil && err != http.ErrServerClosed {
452			return fmt.Errorf("server failed: %w", err)
453		}
454		return nil
455	}
456
457	func (s *Server) Shutdown(ctx context.Context) {
458		shutdownStart := time.Now()
459

		})
	}

	authHandle := auth.GetAuthInstance()

	// Middleware must be defined before routes in chi
	s.router.Use(func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
			start := time.Now()
			ww := middleware.NewWrapResponseWriter(rw, r.ProtoMajor)
			next.ServeHTTP(ww, r)
			cclog.Debugf("%s %s (%d, %.02fkb, %dms)",
				r.Method, r.URL.RequestURI(),
				ww.Status(), float32(ww.BytesWritten())/1024,
				time.Since(start).Milliseconds())
		})
	})
	s.router.Use(middleware.Compress(5))
	s.router.Use(middleware.Recoverer)
	s.router.Use(cors.Handler(cors.Options{
		AllowCredentials: false,
		AllowedHeaders:   []string{"X-Requested-With", "Content-Type", "Authorization", "Origin"},
		AllowedMethods:   []string{"GET", "POST", "HEAD", "OPTIONS"},
		AllowedOrigins:   []string{"*"},
	}))
	s.router.Use(func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
			h := rw.Header()
			h.Set("X-Content-Type-Options", "nosniff")
			h.Set("X-Frame-Options", "DENY")
			h.Set("Referrer-Policy", "same-origin")
			// Conservative CSP: blocks clickjacking (frame-ancestors), plugin
			// content (object-src) and <base> injection (base-uri) without
			// restricting scripts/styles, so it cannot break the self-hosted
			// SPA which relies on inline scripts. A full script-src policy needs
			// per-template nonces and should be added separately.
			h.Set("Content-Security-Policy", "frame-ancestors 'none'; object-src 'none'; base-uri 'self'")
			if r.TLS != nil || r.Header.Get("X-Forwarded-Proto") == "https" {
				h.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains")
			}
			next.ServeHTTP(rw, r)
		})
	})

	// CSRF defense-in-depth on top of the SameSite=Lax session cookie: reject
	// cross-site state-changing requests. Modern browsers set Sec-Fetch-Site on
	// every request, so this stops a malicious site from driving cookie-
	// authenticated POST/PUT/DELETE/PATCH calls. It fails open when the header is
	// absent or not "cross-site", so non-browser API clients and the same-origin
	// SPA are unaffected.
	s.router.Use(func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
			switch r.Method {
			case http.MethodGet, http.MethodHead, http.MethodOptions, http.MethodTrace:
			default:
				if r.Header.Get("Sec-Fetch-Site") == "cross-site" {
					http.Error(rw, "cross-site request blocked", http.StatusForbidden)
					return
				}
			}
			next.ServeHTTP(rw, r)
		})
	})

	s.restAPIHandle = api.New()

	info := map[string]any{}
	info["hasOpenIDConnect"] = false

	if auth.Keys.OpenIDConfig != nil {
		openIDConnect := auth.NewOIDC(authHandle)
		openIDConnect.RegisterEndpoints(s.router)
		info["hasOpenIDConnect"] = true
	}

	s.router.Get("/login", func(rw http.ResponseWriter, r *http.Request) {
		rw.Header().Add("Content-Type", "text/html; charset=utf-8")
		cclog.Debugf("##%v##", info)
		web.RenderTemplate(rw, "login.tmpl", &web.Page{Title: "Login", Build: buildInfo, Infos: info})
	})
	s.router.HandleFunc("/imprint", func(rw http.ResponseWriter, r *http.Request) {
		rw.Header().Add("Content-Type", "text/html; charset=utf-8")
		web.RenderTemplate(rw, "imprint.tmpl", &web.Page{Title: "Imprint", Build: buildInfo})
	})
	s.router.HandleFunc("/privacy", func(rw http.ResponseWriter, r *http.Request) {
		rw.Header().Add("Content-Type", "text/html; charset=utf-8")
		web.RenderTemplate(rw, "privacy.tmpl", &web.Page{Title: "Privacy", Build: buildInfo})
	})

	if !config.Keys.DisableAuthentication {
		// Create login failure handler (used by both /login and /jwt-login)
		loginFailureHandler := func(rw http.ResponseWriter, r *http.Request, err error) {
			rw.Header().Add("Content-Type", "text/html; charset=utf-8")
			rw.WriteHeader(http.StatusUnauthorized)
			web.RenderTemplate(rw, "login.tmpl", &web.Page{
				Title:   "Login failed - ClusterCockpit",
				MsgType: "alert-warning",
				Message: err.Error(),
				Build:   buildInfo,
				Infos:   info,
			})
		}

		s.router.Post("/login", authHandle.Login(loginFailureHandler).ServeHTTP)
		s.router.HandleFunc("/jwt-login", authHandle.Login(loginFailureHandler).ServeHTTP)

		s.router.Post("/logout", authHandle.Logout(
			http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
				rw.Header().Add("Content-Type", "text/html; charset=utf-8")
				rw.WriteHeader(http.StatusOK)
				web.RenderTemplate(rw, "login.tmpl", &web.Page{
					Title:   "Bye - ClusterCockpit",
					MsgType: "alert-info",
					Message: "Logout successful",
					Build:   buildInfo,
					Infos:   info,
				})
			})).ServeHTTP)
	}

	if flagDev {
		s.router.Handle("/playground", playground.Handler("GraphQL playground", "/query"))
		s.router.Get("/swagger/*", httpSwagger.Handler(
			httpSwagger.URL("http://"+config.Keys.Addr+"/swagger/doc.json")))
	}

	// Secured routes (require authentication)
	s.router.Group(func(secured chi.Router) {
		if !config.Keys.DisableAuthentication {
			secured.Use(func(next http.Handler) http.Handler {
				return authHandle.Auth(
					next,
					func(rw http.ResponseWriter, r *http.Request, err error) {
						rw.WriteHeader(http.StatusUnauthorized)
						web.RenderTemplate(rw, "login.tmpl", &web.Page{
							Title:    "Authentication failed - ClusterCockpit",
							MsgType:  "alert-danger",
							Message:  err.Error(),
							Build:    buildInfo,
							Infos:    info,
							Redirect: r.RequestURI,
						})
					})
			})
		}

		secured.Handle("/query", graphQLServer)

		secured.HandleFunc("/search", func(rw http.ResponseWriter, r *http.Request) {
			routerConfig.HandleSearchBar(rw, r, buildInfo)
		})

		routerConfig.SetupRoutes(secured, buildInfo)
	})

	// API routes (JWT token auth)
	s.router.Route("/api", func(apiRouter chi.Router) {
		// Main API routes with API auth
		apiRouter.Group(func(securedapi chi.Router) {
			if !config.Keys.DisableAuthentication {
				securedapi.Use(func(next http.Handler) http.Handler {
					return authHandle.AuthAPI(next, onFailureResponse)
				})
			}
			s.restAPIHandle.MountAPIRoutes(securedapi)
		})

		// Metric store API routes with separate auth
		apiRouter.Group(func(metricstoreapi chi.Router) {
			if !config.Keys.DisableAuthentication {
				metricstoreapi.Use(func(next http.Handler) http.Handler {
					return authHandle.AuthMetricStoreAPI(next, onFailureResponse)
				})
			}
			s.restAPIHandle.MountMetricStoreAPIRoutes(metricstoreapi)
		})
	})

	// User API routes
	s.router.Route("/userapi", func(userapi chi.Router) {
		if !config.Keys.DisableAuthentication {
			userapi.Use(func(next http.Handler) http.Handler {
				return authHandle.AuthUserAPI(next, onFailureResponse)
			})
		}
		s.restAPIHandle.MountUserAPIRoutes(userapi)
	})

	// Config API routes (uses Group with full paths to avoid shadowing
	// the /config page route that is registered in the secured group)
	s.router.Group(func(configapi chi.Router) {
		if !config.Keys.DisableAuthentication {
			configapi.Use(func(next http.Handler) http.Handler {
				return authHandle.AuthConfigAPI(next, onFailureResponse)
			})
		}
		s.restAPIHandle.MountConfigAPIRoutes(configapi)
	})

	// Frontend API routes
	s.router.Route("/frontend", func(frontendapi chi.Router) {
		if !config.Keys.DisableAuthentication {
			frontendapi.Use(func(next http.Handler) http.Handler {
				return authHandle.AuthFrontendAPI(next, onFailureResponse)
			})
		}
		s.restAPIHandle.MountFrontendAPIRoutes(frontendapi)
	})

	if config.Keys.APISubjects != nil {
		s.natsAPIHandle = api.NewNatsAPI()
		if err := s.natsAPIHandle.StartSubscriptions(); err != nil {
			return fmt.Errorf("starting NATS subscriptions: %w", err)
		}
	}

	// 404 handler for pages and API routes
	notFoundHandler := func(rw http.ResponseWriter, r *http.Request) {
		if strings.HasPrefix(r.URL.Path, "/api/") || strings.HasPrefix(r.URL.Path, "/userapi/") ||
			strings.HasPrefix(r.URL.Path, "/frontend/") || strings.HasPrefix(r.URL.Path, "/config/") {
			rw.Header().Set("Content-Type", "application/json")
			rw.WriteHeader(http.StatusNotFound)
			json.NewEncoder(rw).Encode(map[string]string{
				"status": "Resource not found",
				"error":  "the requested endpoint does not exist",
			})
			return
		}
		rw.Header().Set("Content-Type", "text/html; charset=utf-8")
		rw.WriteHeader(http.StatusNotFound)
		web.RenderTemplate(rw, "404.tmpl", &web.Page{
			Title: "Page Not Found",
			Build: buildInfo,
		})
	}

	// Set NotFound on the router so chi uses it for all unmatched routes,
	// including those under subrouters like /api, /userapi, /frontend, etc.
	s.router.NotFound(notFoundHandler)

	if config.Keys.EmbedStaticFiles {
		if i, err := os.Stat("./var/img"); err == nil {
			if i.IsDir() {
				cclog.Info("Use local directory for static images")
				s.router.Handle("/img/*", http.StripPrefix("/img/", http.FileServer(http.Dir("./var/img"))))
			}
		}
		fileServer := http.StripPrefix("/", web.ServeFiles())
		s.router.Handle("/*", http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
			if web.StaticFileExists(r.URL.Path) {
				fileServer.ServeHTTP(rw, r)
				return
			}
			notFoundHandler(rw, r)
		}))
	} else {
		staticDir := http.Dir(config.Keys.StaticFiles)
		fileServer := http.FileServer(staticDir)
		s.router.Handle("/*", http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
			f, err := staticDir.Open(r.URL.Path)
			if err == nil {
				f.Close()
				fileServer.ServeHTTP(rw, r)
				return
			}
			notFoundHandler(rw, r)
		}))
	}

	return nil
}

// Server timeout defaults (in seconds)
const (
	defaultReadHeaderTimeout = 20
	defaultWriteTimeout      = 20
)

func (s *Server) Start(ctx context.Context) error {
	// Use configurable timeouts with defaults
	readHeaderTimeout := time.Duration(defaultReadHeaderTimeout) * time.Second
	writeTimeout := time.Duration(defaultWriteTimeout) * time.Second

	s.server = &http.Server{
		ReadHeaderTimeout: readHeaderTimeout,
		WriteTimeout:      writeTimeout,
		Handler:           s.router,
		Addr:              config.Keys.Addr,
	}

	// Start http or https server
	listener, err := net.Listen("tcp", config.Keys.Addr)
	if err != nil {
		return fmt.Errorf("starting listener on '%s': %w", config.Keys.Addr, err)
	}

	if !strings.HasSuffix(config.Keys.Addr, ":80") && config.Keys.RedirectHTTPTo != "" {
		go func() {
			if err := http.ListenAndServe(":80", http.RedirectHandler(config.Keys.RedirectHTTPTo, http.StatusMovedPermanently)); err != nil {
				cclog.Errorf("HTTP-to-HTTPS redirect listener on :80 failed: %v", err)
			}
		}()
	}

	if config.Keys.HTTPSCertFile != "" && config.Keys.HTTPSKeyFile != "" {
		cert, err := tls.LoadX509KeyPair(
			config.Keys.HTTPSCertFile, config.Keys.HTTPSKeyFile)
		if err != nil {
			return fmt.Errorf("loading X509 keypair (check 'https-cert-file' and 'https-key-file' in config.json): %w", err)
		}
		listener = tls.NewListener(listener, &tls.Config{
			Certificates: []tls.Certificate{cert},
			CipherSuites: []uint16{
				tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
				tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
			},
			MinVersion:               tls.VersionTLS12,
			PreferServerCipherSuites: true,
		})
		cclog.Infof("HTTPS server listening at %s...", config.Keys.Addr)
	} else {
		cclog.Infof("HTTP server listening at %s...", config.Keys.Addr)
	}
	//
	// Because this program will want to bind to a privileged port (like 80), the listener must
	// be established first, then the user can be changed, and after that,
	// the actual http server can be started.
	if err := runtime.DropPrivileges(config.Keys.Group, config.Keys.User); err != nil {
		return fmt.Errorf("dropping privileges: %w", err)
	}

	if err = s.server.Serve(listener); err != nil && err != http.ErrServerClosed {
		return fmt.Errorf("server failed: %w", err)
	}
	return nil
}

func (s *Server) Shutdown(ctx context.Context) {
	shutdownStart := time.Now()


I now have a complete picture. The migration is cleanly scoped to `internal/auth/auth.go` (the `sessionStore` field and its 3 methods: `AuthViaSession`, `SaveSession`, `Logout`) plus initialization in `Init()`.

One architectural point drives the design: **gorilla `CookieStore` is stateless** (all session data lives encrypted in the cookie, so sessions survive restarts as long as `SESSION_KEY` is stable), whereas **scs/v2 is server-side** (only a random token in the cookie; data lives in a store). This changes two things I need your input on.

Note also: scs's idiomatic `LoadAndSave` middleware buffers the *entire* HTTP response in memory to inject the cookie. Given your performance guidance (streaming over buffering) and that the secured group includes the large GraphQL `/query` endpoint, I plan to **avoid `LoadAndSave`** and instead use scs's lower-level API (`Load`/`Put`/`Commit`/`Destroy`) directly inside the existing `SaveSession`/`AuthViaSession`/`Logout` methods — keeping the current on-demand pattern with zero response buffering and no router middleware changes.


AskUserQuestion

Question: Which scs/v2 session store backend should sessions use? (scs is server-side, unlike the current cookie-only gorilla store.)

Choices:
Persist sessions in the existing SQLite DB via a new `sessions` table + migration. Preserves current behavior: users stay logged in across server restarts/deploys. Adds dep github.com/alexedwards/scs/sqlite3store.
scs.New()
mgr.Store = sqlite3store.New(db.DB)
// + migration: CREATE TABLE sessions(token TEXT PK,
//   data BLOB, expiry REAL); INDEX on expiry
// sessions survive restart
scs default. Zero extra deps, no migration. BUT all sessions are lost on every restart/deploy — users must re-login. Behavior regression vs current cookie store.
scs.New()
// mgr.Store defaults to memstore
// no migration, no extra dependency
// sessions LOST on restart

Question: The SESSION_KEY env var (base64 32-byte key) encrypts the gorilla cookie. scs server-side stores don't need it (token is random). How should I handle it?

Choices:
Drop the SESSION_KEY requirement, the fatal startup check, and references in .env/docs. scs generates secure random tokens; the key is dead code.
// delete os.Getenv("SESSION_KEY")
// delete the Fatal check
// remove from configs/env-template.txt + docs
Leave SESSION_KEY in .env and keep reading it but unused, to avoid breaking existing deployment scripts. Not used by scs.
// still read SESSION_KEY but ignore it
// keeps .env compatible, adds dead code


Your questions have been answered: "Which scs/v2 session store backend should sessions use? (scs is server-side, unlike the current cookie-only gorilla store.)"="SQLite store (sqlite3store)" selected preview:
scs.New()
mgr.Store = sqlite3store.New(db.DB)
// + migration: CREATE TABLE sessions(token TEXT PK,
//   data BLOB, expiry REAL); INDEX on expiry
// sessions survive restart, "The SESSION_KEY env var (base64 32-byte key) encrypts the gorilla cookie. scs server-side stores don't need it (token is random). How should I handle it?"="Remove it" selected preview:
// delete os.Getenv("SESSION_KEY")
// delete the Fatal check
// remove from configs/env-template.txt + docs. You can now continue with these answers in mind.

Question: Which scs/v2 session store backend should sessions use? (scs is server-side, unlike the current cookie-only gorilla store.)

Choices:
Persist sessions in the existing SQLite DB via a new `sessions` table + migration. Preserves current behavior: users stay logged in across server restarts/deploys. Adds dep github.com/alexedwards/scs/sqlite3store.
scs.New()
mgr.Store = sqlite3store.New(db.DB)
// + migration: CREATE TABLE sessions(token TEXT PK,
//   data BLOB, expiry REAL); INDEX on expiry
// sessions survive restart
scs default. Zero extra deps, no migration. BUT all sessions are lost on every restart/deploy — users must re-login. Behavior regression vs current cookie store.
scs.New()
// mgr.Store defaults to memstore
// no migration, no extra dependency
// sessions LOST on restart

Question: The SESSION_KEY env var (base64 32-byte key) encrypts the gorilla cookie. scs server-side stores don't need it (token is random). How should I handle it?

Choices:
Drop the SESSION_KEY requirement, the fatal startup check, and references in .env/docs. scs generates secure random tokens; the key is dead code.
// delete os.Getenv("SESSION_KEY")
// delete the Fatal check
// remove from configs/env-template.txt + docs
Leave SESSION_KEY in .env and keep reading it but unused, to avoid breaking existing deployment scripts. Not used by scs.
// still read SESSION_KEY but ignore it
// keeps .env compatible, adds dead code


Good choices. Let me verify the DB-handle access, migration conventions, and SESSION_KEY references so the plan is precise.


Agent

Find DB handle and migration setup

Prompt:
In the Go repo /Users/jan/prg/ClusterCockpit/cc-backend I need precise facts for a migration plan.

1. How does internal/repository expose the database connection handle? Find the global DB connection object (likely a *sqlx.DB or *sql.DB). I need to know how to get a `*sql.DB` from it (e.g. `repository.GetConnection().DB` or similar). Report the exact accessor function name, file:line, and the type. Also note which SQLite driver is imported (mattn/go-sqlite3 or modernc.org/sqlite) and the driver name string used in sql.Open.

2. Show the database migration conventions: list files in internal/repository/migrations/sqlite3/, report the highest-numbered migration file name, and show the content of the most recent one or two migration files (the up/down .sql files) so I can match the naming/format. Also find where the schema Version constant is defined (internal/repository/migration.go) and its current value, and how migrations are embedded/applied.

3. Find every reference to SESSION_KEY across the whole repo (grep "SESSION_KEY") — in .env, configs/env-template.txt, *.go, *.md docs, scripts. Report file:line and surrounding context for each.

4. Check go.mod for the module path and Go version, and confirm github.com/gorilla/sessions is only referenced where expected.

Report exact file paths, line numbers, and code/content snippets.


Perfect! Now I have all the information needed. Let me compile the comprehensive report.

## Migration Plan - Precise Facts Report

### 1. Database Connection Handle

**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/dbConnection.go`

The database connection is exposed via:
- **Accessor function:** `GetConnection()` at line 112
- **Type returned:** `*DBConnection` (struct defined at line 26)
- **DB accessor:** `GetConnection().DB` returns `*sqlx.DB`
- **SQLite driver imported:** `github.com/mattn/go-sqlite3` (line 17)
- **Driver names used in sql.Open():**
  - Default: `"sqlite3"` (line 84)
  - With debug hooks: `"sqlite3WithHooks"` (line 82, registered at line 81)

**Code snippet showing the connection access pattern:**
```go
// From line 26-29
type DBConnection struct {
    DB     *sqlx.DB
    Driver string
}

// From line 112-118
func GetConnection() *DBConnection {
    if dbConnInstance == nil {
        cclog.Fatalf("Database connection not initialized!")
    }
    return dbConnInstance
}
```

To access the `*sql.DB` from a `*sqlx.DB`, use the `.DB` field which is a built-in property of sqlx.DB, accessed as: `GetConnection().DB.DB` (the first `.DB` is the DBConnection field, the second `.DB` is the sqlx.DB property).

---

### 2. Database Migration Conventions

**Migration directory:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/migrations/sqlite3/`

**All migration files (11 total):**
1. `01_init-schema.down.sql` / `01_init-schema.up.sql`
2. `02_add-index.down.sql` / `02_add-index.up.sql`
3. `03_add-userprojects.down.sql` / `03_add-userprojects.up.sql`
4. `04_add-constraints.down.sql` / `04_add-constraints.up.sql`
5. `05_extend-tags.down.sql` / `05_extend-tags.up.sql`
6. `06_change-config.down.sql` / `06_change-config.up.sql`
7. `07_fix-tag-id.down.sql` / `07_fix-tag-id.up.sql`
8. `08_add-footprint.down.sql` / `08_add-footprint.up.sql`
9. `09_add-job-cache.down.sql` / `09_add-job-cache.up.sql`
10. `10_node-table.down.sql` / `10_node-table.up.sql`
11. `11_optimize-indexes.down.sql` / `11_optimize-indexes.up.sql` (MOST RECENT)

**Naming convention:** `NN_description.{up,down}.sql` where NN is zero-padded number

**Most recent migration (migration 11):**

**11_optimize-indexes.up.sql** (lines 1-111):
- Drops ~30 overly-specific sorting indexes from earlier migrations
- Creates 9 new covering/partial indexes optimized for common queries:
  - 2 covering indexes for grouped stats queries (cluster+user/project+starttime)
  - 3 covering indexes for status/dashboard queries (with job_state grouping)
  - 3 partial covering indexes for running jobs only (WHERE job_state = 'running')
- Ends with `PRAGMA optimize;`

**11_optimize-indexes.down.sql** (lines 1-74):
- Drops all the new indexes created in migration 11
- Recreates all the old indexes from migration 09
- Ends with `PRAGMA optimize;`

**Migration 10 (node-table) up.sql** (lines 1-48):
- Creates `node` table with id, hostname, cluster, subcluster, meta_data (JSON)
- Creates `node_state` table with time tracking, resource allocation, health states
- Creates 9 indexes for both tables including compound indexes on cluster/subcluster

**Schema Version:**

**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/internal/repository/migration.go`
- **Line 28:** `const Version uint = 11`
- **Lines 23-25 contain version history comments**

**Migration system:**
- Uses `github.com/golang-migrate/migrate/v4` library (line 26 in go.mod, line 14 in migration.go)
- Migrations embedded at build time using `//go:embed migrations/*` directive (line 30-31)
- Applied via `iofs.New()` and `migrate.NewWithInstance()` for embedded filesystem loading
- Schema versions tracked in SQLite's `schema_migrations` table

---

### 3. SESSION_KEY References Across Repository

**Complete SESSION_KEY references (6 occurrences):**

| File | Line | Context |
|------|------|---------|
| `/Users/jan/prg/ClusterCockpit/cc-backend/.env` | 8 | `SESSION_KEY="REDACTED"` (test/dev secret) |
| `/Users/jan/prg/ClusterCockpit/cc-backend/configs/env-template.txt` | 11 | `SESSION_KEY="REDACTED"` (template for users) |
| `/Users/jan/prg/ClusterCockpit/cc-backend/cmd/cc-backend/init.go` | (embedded) | Same test key in init string (literal in code) |
| `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go` | 189 | `sessKey := os.Getenv("SESSION_KEY")` (reads environment variable) |
| `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go` | 192 | Fatal error message: `"environment variable 'SESSION_KEY' not set..."` |
| `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go` | 193 | Fatal error message: `"Set SESSION_KEY in .env (base64-encoded 32 random bytes)..."` |
| `/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/api_test.go` | (line ~TBD) | `t.Setenv("SESSION_KEY", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=")` (test harness) |
| `/Users/jan/prg/ClusterCockpit/cc-backend/internal/api/nats_test.go` | (line ~TBD) | `t.Setenv("SESSION_KEY", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=")` (test harness) |

**Usage in auth.go (lines 189-209):**
The SESSION_KEY is:
1. Read from environment (line 189)
2. If empty and authentication enabled → fatal error (lines 192-194)
3. If empty and authentication disabled → random ephemeral key generated (lines 198-202)
4. If present → base64 decoded and used to create cookie store (lines 204-208)

**Related import in auth.go:**
- `github.com/gorilla/sessions` (line 32)

---

### 4. Go Module & Dependencies

**File:** `/Users/jan/prg/ClusterCockpit/cc-backend/go.mod`

- **Module path:** `github.com/ClusterCockpit/cc-backend` (line 1)
- **Go version:** `1.25.0` (line 3)
- **gorilla/sessions:** `github.com/gorilla/sessions v1.4.0` (line 28)

**gorilla/sessions usage verification:**
- Only imported in: `/Users/jan/prg/ClusterCockpit/cc-backend/internal/auth/auth.go` (line 32)
- No other Go files reference this package directly
- The import is used for:
  - `sessions.CookieStore` struct (line 121 in auth.go)
  - `sessions.NewCookieStore()` function (line 202, 208)
  - Session management via `sessionStore.Get()`, `sessionStore.New()`, `sessionStore.Save()`

---

### Summary for Migration Planning

- **DB connection handle:** `repository.GetConnection().DB` gives you `*sqlx.DB`; its `.DB` property is `*sql.DB`
- **SQLite driver:** `mattn/go-sqlite3`, driver name is `"sqlite3"` (or `"sqlite3WithHooks"` with debug logging)
- **Latest migration:** #11 (optimize-indexes) - follows numbered prefix format with descriptive names
- **Schema version:** Currently at 11, defined as constant in migration.go
- **SESSION_KEY:** Environment variable for base64-encoded 32-byte cookie secret, required unless authentication disabled, referenced in 2 config files + 1 code template + 2 locations in auth module + 2 test files
- **gorilla/sessions:** Only used in internal/auth/auth.go for cookie-based session management, version v1.4.0

Prompt:
In the Go repo /Users/jan/prg/ClusterCockpit/cc-backend I need precise facts for a migration plan.

1. How does internal/repository expose the database connection handle? Find the global DB connection object (likely a *sqlx.DB or *sql.DB). I need to know how to get a `*sql.DB` from it (e.g. `repository.GetConnection().DB` or similar). Report the exact accessor function name, file:line, and the type. Also note which SQLite driver is imported (mattn/go-sqlite3 or modernc.org/sqlite) and the driver name string used in sql.Open.

2. Show the database migration conventions: list files in internal/repository/migrations/sqlite3/, report the highest-numbered migration file name, and show the content of the most recent one or two migration files (the up/down .sql files) so I can match the naming/format. Also find where the schema Version constant is defined (internal/repository/migration.go) and its current value, and how migrations are embedded/applied.

3. Find every reference to SESSION_KEY across the whole repo (grep "SESSION_KEY") — in .env, configs/env-template.txt, *.go, *.md docs, scripts. Report file:line and surrounding context for each.

4. Check go.mod for the module path and Go version, and confirm github.com/gorilla/sessions is only referenced where expected.

Report exact file paths, line numbers, and code/content snippets.


Let me confirm the startup ordering — sqlite3store needs the DB connected (and migrated) before `auth.Init()` runs.


Bash

grep -rn "repository.Connect\|auth.Init\|MigrateDB\|migrate" cmd/cc-backend/*.go | head -40

Check init ordering in main


cmd/cc-backend/init.go:83:	err := repository.MigrateDB("./var/job.db")
cmd/cc-backend/main.go:135:	repository.Connect(config.Keys.DB)
cmd/cc-backend/main.go:140:	if flagMigrateDB {
cmd/cc-backend/main.go:141:		err := repository.MigrateDB(config.Keys.DB)
cmd/cc-backend/main.go:145:		cclog.Exitf("MigrateDB Success: Migrated SQLite database at '%s' to version %d.\n",
cmd/cc-backend/main.go:178:	// registers no authenticators (see auth.Init).
cmd/cc-backend/main.go:180:		auth.Init(&cfg)
cmd/cc-backend/main.go:185:		auth.Init(nil)
cmd/cc-backend/main.go:524:	// Handle database migration (migrate, revert, force)
cmd/cc-backend/cli.go:13:	flagReinitDB, flagInit, flagServer, flagSyncLDAP, flagGops, flagMigrateDB, flagRevertDB,
cmd/cc-backend/cli.go:27:	flag.BoolVar(&flagMigrateDB, "migrate-db", false, "Migrate database to supported version and exit")


grep -n "func Connect\|Migrate\|checkDBVersion\|Version" internal/repository/dbConnection.go internal/repository/migration.go | head -30

Check Connect migration behavior


internal/repository/dbConnection.go:55:func Connect(db string) {
internal/repository/dbConnection.go:105:		err = checkDBVersion(dbHandle.DB)
internal/repository/migration.go:19:// Version is the current database schema version required by this version of cc-backend.
internal/repository/migration.go:23:// Version history:
internal/repository/migration.go:24://   - Version 11: Optimize job table indexes (reduce from ~78 to 48, add covering/partial indexes)
internal/repository/migration.go:25://   - Version 10: Node table
internal/repository/migration.go:28:const Version uint = 11
internal/repository/migration.go:33:// checkDBVersion verifies that the database schema version matches the expected version.
internal/repository/migration.go:43:func checkDBVersion(db *sql.DB) error {
internal/repository/migration.go:58:	v, dirty, err := m.Version()
internal/repository/migration.go:60:		if err == migrate.ErrNilVersion {
internal/repository/migration.go:67:	if v < Version {
internal/repository/migration.go:68:		return fmt.Errorf("unsupported database version %d, need %d.\nPlease backup your database file and run cc-backend -migrate-db", v, Version)
internal/repository/migration.go:69:	} else if v > Version {
internal/repository/migration.go:70:		return fmt.Errorf("unsupported database version %d, need %d.\nPlease refer to documentation how to downgrade db with external migrate tool", v, Version)
internal/repository/migration.go:74:		return fmt.Errorf("last migration to version %d has failed, please fix the db manually and force version with -force-db flag", Version)
internal/repository/migration.go:80:// getMigrateInstance creates a new migration instance for the given database file.
internal/repository/migration.go:81:// This is used internally by MigrateDB, RevertDB, and ForceDB.
internal/repository/migration.go:82:func getMigrateInstance(db string) (m *migrate.Migrate, err error) {
internal/repository/migration.go:96:// MigrateDB applies all pending database migrations to bring the schema up to date.
internal/repository/migration.go:102://  2. Applies all migrations from current version to target Version
internal/repository/migration.go:113:func MigrateDB(db string) error {
internal/repository/migration.go:114:	m, err := getMigrateInstance(db)
internal/repository/migration.go:119:	v, dirty, err := m.Version()
internal/repository/migration.go:121:		if err == migrate.ErrNilVersion {
internal/repository/migration.go:128:	if v < Version {
internal/repository/migration.go:129:		cclog.Infof("unsupported database version %d, need %d.\nPlease backup your database file and run cc-backend -migrate-db", v, Version)
internal/repository/migration.go:133:		return fmt.Errorf("last migration to version %d has failed, please fix the db manually and force version with -force-db flag", Version)
internal/repository/migration.go:148:// RevertDB rolls back the database schema to the previous version (Version - 1).
internal/repository/migration.go:160:	m, err := getMigrateInstance(db)


I have everything needed. Key startup facts confirmed:
- DB handle: `repository.GetConnection().DB.DB` (the `*sql.DB` inside the `*sqlx.DB`).
- Driver: `mattn/go-sqlite3`, name `"sqlite3"`.
- `repository.Connect()` (main.go:135) runs **before** `auth.Init()` (main.go:180), and only *checks* the schema version (`checkDBVersion`) — migrations run via `-migrate-db`/`-init-db`. So a new migration #12 (Version → 12) creates the `sessions` table; the store is then ready by the time `auth.Init()` runs.

Let me write the plan.