Initial implementation of inventree

A small IT asset inventory system built around a nested folder tree, matching the project brief: Go + html/template + Bootstrap 5 + vanilla JS, SQLite storage (WAL, FKs, migrations), embedded templates/static assets, single compiled binary. - AJAX-driven inventory tree: lazy-loaded folder expansion with per-user persisted expand state, drag-and-drop move for folders/assets, safe delete-with-relocate-or-cascade confirmation, search with breadcrumbs. - Assets: CRUD, duplicate, move, auto-generated IT-000001-style IDs, CSV import (with optional folder auto-create) and export. - Admin-defined item types with custom fields (text/long_text/number/date/ boolean/dropdown/url/ip_address). - Configurable statuses, session-based auth (bcrypt, secure cookies), admin/user roles, user management. - CLI: serve, version, database migrate, database backup; /healthz; graceful shutdown; Dockerfile/docker-compose/systemd unit; Go test suite.
2026-08-17 13:34:40 -05:00
commit 218687a1ee
71 changed files with 8102 additions and 0 deletions
@@ -0,0 +1,186 @@
+// Package users manages application accounts.
+package users
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"time"
+
+	"golang.org/x/crypto/bcrypt"
+
+	"inventree/internal/models"
+)
+
+var (
+	ErrNotFound         = errors.New("user not found")
+	ErrUsernameRequired = errors.New("username is required")
+	ErrUsernameTaken    = errors.New("username is already taken")
+	ErrInvalidRole      = errors.New("role must be admin or user")
+	ErrLastAdmin        = errors.New("cannot remove the last enabled admin")
+)
+
+type Store struct{ db *sql.DB }
+
+func NewStore(db *sql.DB) *Store { return &Store{db: db} }
+
+const timeLayout = "2006-01-02T15:04:05.000Z"
+
+func parseTime(s string) time.Time {
+	t, _ := time.Parse(timeLayout, s)
+	return t
+}
+
+func scan(row interface{ Scan(...any) error }) (*models.User, error) {
+	var u models.User
+	var created, updated string
+	if err := row.Scan(&u.ID, &u.Username, &u.PasswordHash, &u.Role, &u.Enabled, &created, &updated); err != nil {
+		return nil, err
+	}
+	u.CreatedAt = parseTime(created)
+	u.UpdatedAt = parseTime(updated)
+	return &u, nil
+}
+
+func (s *Store) List(ctx context.Context) ([]models.User, error) {
+	rows, err := s.db.QueryContext(ctx, `SELECT id, username, password_hash, role, enabled, created_at, updated_at FROM users ORDER BY username COLLATE NOCASE ASC`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []models.User
+	for rows.Next() {
+		u, err := scan(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *u)
+	}
+	return out, rows.Err()
+}
+
+func (s *Store) Get(ctx context.Context, id int64) (*models.User, error) {
+	row := s.db.QueryRowContext(ctx, `SELECT id, username, password_hash, role, enabled, created_at, updated_at FROM users WHERE id = ?`, id)
+	u, err := scan(row)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	return u, err
+}
+
+func (s *Store) GetByUsername(ctx context.Context, username string) (*models.User, error) {
+	row := s.db.QueryRowContext(ctx, `SELECT id, username, password_hash, role, enabled, created_at, updated_at FROM users WHERE username = ?`, username)
+	u, err := scan(row)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	return u, err
+}
+
+// Create adds a user with the given plaintext password (hashed with bcrypt).
+func (s *Store) Create(ctx context.Context, u *models.User, plaintextPassword string) error {
+	if u.Username == "" {
+		return ErrUsernameRequired
+	}
+	if u.Role != models.RoleAdmin && u.Role != models.RoleUser {
+		return ErrInvalidRole
+	}
+	if _, err := s.GetByUsername(ctx, u.Username); err == nil {
+		return ErrUsernameTaken
+	} else if !errors.Is(err, ErrNotFound) {
+		return err
+	}
+	hash, err := bcrypt.GenerateFromPassword([]byte(plaintextPassword), bcrypt.DefaultCost)
+	if err != nil {
+		return err
+	}
+	res, err := s.db.ExecContext(ctx,
+		`INSERT INTO users (username, password_hash, role, enabled) VALUES (?, ?, ?, ?)`,
+		u.Username, string(hash), u.Role, u.Enabled)
+	if err != nil {
+		return err
+	}
+	id, err := res.LastInsertId()
+	if err != nil {
+		return err
+	}
+	u.ID = id
+	return nil
+}
+
+// Update changes username, role, and enabled state (not the password).
+func (s *Store) Update(ctx context.Context, u *models.User) error {
+	if u.Username == "" {
+		return ErrUsernameRequired
+	}
+	if u.Role != models.RoleAdmin && u.Role != models.RoleUser {
+		return ErrInvalidRole
+	}
+	if existing, err := s.GetByUsername(ctx, u.Username); err == nil && existing.ID != u.ID {
+		return ErrUsernameTaken
+	}
+	if u.Role != models.RoleAdmin || !u.Enabled {
+		if err := s.assertNotLastAdmin(ctx, u.ID); err != nil {
+			return err
+		}
+	}
+	_, err := s.db.ExecContext(ctx,
+		`UPDATE users SET username = ?, role = ?, enabled = ?, updated_at = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`,
+		u.Username, u.Role, u.Enabled, u.ID)
+	return err
+}
+
+func (s *Store) SetPassword(ctx context.Context, id int64, plaintextPassword string) error {
+	hash, err := bcrypt.GenerateFromPassword([]byte(plaintextPassword), bcrypt.DefaultCost)
+	if err != nil {
+		return err
+	}
+	_, err = s.db.ExecContext(ctx,
+		`UPDATE users SET password_hash = ?, updated_at = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`,
+		string(hash), id)
+	return err
+}
+
+func (s *Store) Delete(ctx context.Context, id int64) error {
+	if err := s.assertNotLastAdmin(ctx, id); err != nil {
+		return err
+	}
+	_, err := s.db.ExecContext(ctx, `DELETE FROM users WHERE id = ?`, id)
+	return err
+}
+
+// assertNotLastAdmin returns ErrLastAdmin if id is currently an enabled
+// admin and is the only one remaining.
+func (s *Store) assertNotLastAdmin(ctx context.Context, id int64) error {
+	u, err := s.Get(ctx, id)
+	if err != nil {
+		return err
+	}
+	if u.Role != models.RoleAdmin || !u.Enabled {
+		return nil
+	}
+	var count int
+	if err := s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM users WHERE role = 'admin' AND enabled = 1`).Scan(&count); err != nil {
+		return err
+	}
+	if count <= 1 {
+		return ErrLastAdmin
+	}
+	return nil
+}
+
+// Authenticate verifies a username/password pair and returns the user if
+// valid, enabled, and the password matches.
+func (s *Store) Authenticate(ctx context.Context, username, password string) (*models.User, error) {
+	u, err := s.GetByUsername(ctx, username)
+	if err != nil {
+		return nil, err
+	}
+	if !u.Enabled {
+		return nil, errors.New("account is disabled")
+	}
+	if err := bcrypt.CompareHashAndPassword([]byte(u.PasswordHash), []byte(password)); err != nil {
+		return nil, errors.New("invalid credentials")
+	}
+	return u, nil
+}