Files
bookhoard/internal/middleware/password_validator.go
T
John O'Keefe 8631aa00bf refactor: remove dead code across server, templ pages, and client modules
Deadcode-verified removals (RTA reachability from main, cross-checked
with -test and textual xrefs):

Go server:
- whole files: middleware/transaction.go, middleware/error_handler.go,
  middleware/password_validator.go (live registration machinery kept),
  handlers/sync.go, sync/offline.go
- unrouted endpoints: auth UpdateUsername/UpdateEmail, timezone
  settings handler, OPDS RegisterOPDS, Kobo LibrarySync handler,
  ReaderHandler.ShowReader, JSON-data twins on collections/library
- duplicate book-matching handlers (book_matching.go Handler twins,
  matching.go MatchingHandler twins), superseded helpers
  (router.parseUUID, handlers.ValidateDeviceToken, normalizePath,
  userExists, generateLockID)

Templ/client:
- never-routed pages: api_explorer.templ, queue.templ and their
  client modules api-explorer.ts, api-explorer-docs.ts, queue.ts
- fully orphaned wrapper modules events.ts, dom.ts
- broken clearSyncQueue (called a nonexistent endpoint) and the
  hidden, never-populated sync-queue section on the devices page
- 166+ unused exports demoted to private (knip-verified); ~85 truly
  dead declarations removed via tsc noUnusedLocals fixpoint
- stale 'interactive API Explorer' claims dropped from docs

The docs drift-gate package (internal/docs), templ-bound modules
(dashboard, stats, header, index, login, profile*, bookshelf,
collections, toast-error), sqlc-generated code, and web/static are
intentionally untouched.
2026-10-25 11:06:08 -04:00

89 lines
3.0 KiB
Go

package middleware
import (
"bookhoard/internal/database"
"regexp"
"sync"
"github.com/go-playground/validator/v10"
)
// specialCharRegex matches the historical "special character" set used by the
// password complexity rules.
const specialCharRegex = `[!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]`
// PasswordValidator validates password complexity against the configured rules.
// When a database.SettingsRegistry is wired via SetSettings, rules are read live and the
// regex set is recompiled under a mutex on each validation. Without a registry
// the historical hardcoded defaults (8+ chars, upper/lower/number/special) apply.
type PasswordValidator struct {
settings *database.SettingsRegistry
}
// SetSettings wires the tunable settings registry.
func (v *PasswordValidator) SetSettings(s *database.SettingsRegistry) { v.settings = s }
// compileSpecialRegex isolates the regexp compile (which is safe to call
// concurrently, but we keep it behind a cached var for the no-registry path).
var (
specialOnce sync.Once
specialRe *regexp.Regexp
)
func specialRegex() *regexp.Regexp {
specialOnce.Do(func() {
specialRe = regexp.MustCompile(specialCharRegex)
})
return specialRe
}
func (v *PasswordValidator) rules() database.PasswordRules {
if v.settings != nil {
return v.settings.PasswordRules()
}
return database.PasswordRules{MinLength: 8, Upper: true, Lower: true, Number: true, Special: true}
}
// CheckPassword applies the active rules to a single password.
func (v *PasswordValidator) CheckPassword(password string) bool {
r := v.rules()
if len(password) < r.MinLength {
return false
}
if r.Upper && !regexp.MustCompile(`[A-Z]`).MatchString(password) {
return false
}
if r.Lower && !regexp.MustCompile(`[a-z]`).MatchString(password) {
return false
}
if r.Number && !regexp.MustCompile(`[0-9]`).MatchString(password) {
return false
}
if r.Special && !specialRegex().MatchString(password) {
return false
}
return true
}
// defaultPasswordValidator backs the passwordcomplex struct tag registered by
// RegisterPasswordValidation. Callers that want live rule updates should
// construct their own PasswordValidator and call SetSettings.
var defaultPasswordValidator = &PasswordValidator{}
// RegisterPasswordValidation registers the password validator with the
// validator instance. The registered func re-evaluates rules on every call, so
// changes to the wired registry take effect immediately.
func RegisterPasswordValidation(v *validator.Validate) error {
return v.RegisterValidation("passwordcomplex", func(fl validator.FieldLevel) bool {
return defaultPasswordValidator.CheckPassword(fl.Field().String())
})
}
// SetDefaultPasswordSettings wires the settings registry into the package-level
// default validator so that the passwordcomplex struct-tag validator (used by
// echo's CustomValidator) follows live configuration. Intended to be called
// once at startup.
func SetDefaultPasswordSettings(s *database.SettingsRegistry) {
defaultPasswordValidator.SetSettings(s)
}