4f0107f1b2
Add a complete authentication and authorization system to Silo with three pluggable backends (local bcrypt, LDAP/FreeIPA, OIDC/Keycloak), session management, API token support, and role-based access control. Authentication backends: - Local: bcrypt (cost 12) password verification against users table - LDAP: FreeIPA simple bind with group-to-role mapping - OIDC: Keycloak redirect flow with realm role mapping - Backends are tried in order; users upserted to DB on first login Session and token management: - PostgreSQL-backed sessions via alexedwards/scs + pgxstore - Opaque API tokens (silo_ prefix, SHA-256 hashed, shown once) - 24h session lifetime, HttpOnly/SameSite=Lax/Secure cookies Role-based access control (admin > editor > viewer): - RequireAuth middleware: Bearer token -> session -> redirect/401 - RequireRole middleware: per-route-group minimum role enforcement - CSRF protection via justinas/nosurf on web forms, API exempt - CORS locked to configured origins when auth enabled Route restructuring: - Public: /health, /ready, /login, /auth/oidc, /auth/callback - Web (auth + CSRF): /, /projects, /schemas, /settings - API read (viewer): GET /api/** - API write (editor): POST/PUT/PATCH/DELETE /api/** User context wiring: - created_by/updated_by columns on items, projects, relationships - All create/update handlers populate tracking fields from context - CSV and BOM import handlers pass authenticated username - Revision creation tracks user across all code paths Default admin account: - Configurable via auth.local.default_admin_username/password - Env var overrides: SILO_ADMIN_USERNAME, SILO_ADMIN_PASSWORD - Idempotent: created on first startup, skipped if exists CLI and FreeCAD plugin: - silo token create/list/revoke subcommands (HTTP API client) - FreeCAD SiloClient sends Bearer token on all requests - Token read from ApiToken preference or SILO_API_TOKEN env var Web UI: - Login page (Catppuccin Mocha themed, OIDC button conditional) - Settings page with account info and API token management - User display name, role badge, and logout button in header - One-time token display banner with copy-to-clipboard Database (migration 009): - users table with role, auth_source, oidc_subject, password_hash - api_tokens table with SHA-256 hash, prefix, expiry, scopes - sessions table (scs pgxstore schema) - audit_log table (schema ready for future use) - created_by/updated_by ALTER on items, relationships, projects New dependencies: scs/v2, scs/pgxstore, go-oidc/v3, go-ldap/v3, justinas/nosurf, golang.org/x/oauth2
69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
package auth
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import (
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"context"
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"fmt"
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"golang.org/x/crypto/bcrypt"
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"github.com/kindredsystems/silo/internal/db"
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)
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// BcryptCost is the cost parameter for bcrypt hashing.
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const BcryptCost = 12
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// LocalBackend authenticates against bcrypt password hashes in the users table.
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type LocalBackend struct {
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users *db.UserRepository
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}
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// NewLocalBackend creates a local authentication backend.
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func NewLocalBackend(users *db.UserRepository) *LocalBackend {
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return &LocalBackend{users: users}
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}
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// Name returns "local".
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func (b *LocalBackend) Name() string { return "local" }
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// Authenticate verifies a username and password against the local database.
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func (b *LocalBackend) Authenticate(ctx context.Context, username, password string) (*User, error) {
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dbUser, hash, err := b.users.GetWithPasswordHash(ctx, username)
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if err != nil {
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return nil, fmt.Errorf("looking up user: %w", err)
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}
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if dbUser == nil {
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return nil, fmt.Errorf("user not found")
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}
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if hash == "" {
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return nil, fmt.Errorf("no local password set")
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}
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if !dbUser.IsActive {
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return nil, fmt.Errorf("account is disabled")
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}
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if dbUser.AuthSource != "local" {
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return nil, fmt.Errorf("user authenticates via %s", dbUser.AuthSource)
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}
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if err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password)); err != nil {
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return nil, fmt.Errorf("invalid password")
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}
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return &User{
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ID: dbUser.ID,
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Username: dbUser.Username,
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DisplayName: dbUser.DisplayName,
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Email: dbUser.Email,
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Role: dbUser.Role,
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AuthSource: "local",
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}, nil
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}
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// HashPassword creates a bcrypt hash of the given password.
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func HashPassword(password string) (string, error) {
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hash, err := bcrypt.GenerateFromPassword([]byte(password), BcryptCost)
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if err != nil {
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return "", fmt.Errorf("hashing password: %w", err)
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}
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return string(hash), nil
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}
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