John O'Keefe
8631aa00bf
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- duplicate book-matching handlers (book_matching.go Handler twins, matching.go MatchingHandler twins), superseded helpers (router.parseUUID, handlers.ValidateDeviceToken, normalizePath, userExists, generateLockID) Templ/client: - never-routed pages: api_explorer.templ,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.
115 lines
2.4 KiB
Go
115 lines
2.4 KiB
Go
package middleware
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import (
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"net/http"
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"sync"
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"time"
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"github.com/labstack/echo/v5"
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)
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// RateLimiterConfig defines rate limiting configuration
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type RateLimiterConfig struct {
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Enabled bool
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RequestsPerMinute int
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CleanupInterval time.Duration
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}
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// RateLimiter tracks request counts per IP
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type RateLimiter struct {
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mu sync.RWMutex
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requests map[string][]time.Time
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config RateLimiterConfig
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}
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// NewRateLimiter creates a new rate limiter
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func NewRateLimiter(config RateLimiterConfig) *RateLimiter {
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rl := &RateLimiter{
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requests: make(map[string][]time.Time),
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config: config,
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}
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// Start cleanup goroutine
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go rl.cleanup()
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return rl
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}
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// cleanup removes old request records
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func (rl *RateLimiter) cleanup() {
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ticker := time.NewTicker(rl.config.CleanupInterval)
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defer ticker.Stop()
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for range ticker.C {
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rl.mu.Lock()
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now := time.Now()
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for ip, requests := range rl.requests {
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// Remove requests older than 1 minute
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var valid []time.Time
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for _, reqTime := range requests {
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if now.Sub(reqTime) < time.Minute {
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valid = append(valid, reqTime)
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}
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}
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if len(valid) == 0 {
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delete(rl.requests, ip)
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} else {
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rl.requests[ip] = valid
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}
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}
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rl.mu.Unlock()
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}
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}
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// Allow checks if a request from the given IP should be allowed
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func (rl *RateLimiter) Allow(ip string) bool {
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rl.mu.Lock()
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defer rl.mu.Unlock()
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now := time.Now()
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// Clean old requests for this IP
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var valid []time.Time
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for _, reqTime := range rl.requests[ip] {
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if now.Sub(reqTime) < time.Minute {
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valid = append(valid, reqTime)
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}
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}
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rl.requests[ip] = valid
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// Check if limit exceeded
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if len(rl.requests[ip]) >= rl.config.RequestsPerMinute {
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return false
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}
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// Add this request
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rl.requests[ip] = append(rl.requests[ip], now)
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return true
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}
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// RateLimiterMiddleware returns echo middleware for rate limiting
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func RateLimiterMiddleware(rl *RateLimiter) echo.MiddlewareFunc {
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return func(next echo.HandlerFunc) echo.HandlerFunc {
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return func(c *echo.Context) error {
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// If rate limiting is disabled, skip checks
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if !rl.config.Enabled {
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return next(c)
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}
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// Get client IP
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ip := c.RealIP()
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if ip == "" {
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ip = c.Request().RemoteAddr
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}
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if !rl.Allow(ip) {
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return c.JSON(http.StatusTooManyRequests, map[string]string{
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"error": "too many requests, please try again later",
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})
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}
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return next(c)
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}
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}
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}
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