43 lines
1.6 KiB
Go
43 lines
1.6 KiB
Go
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package policies
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import (
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"context"
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"net/http"
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"time"
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"github.com/fiatjaf/khatru"
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"github.com/nbd-wtf/go-nostr"
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)
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func EventIPRateLimiter(tokensPerInterval int, interval time.Duration, maxTokens int) func(ctx context.Context, _ *nostr.Event) (reject bool, msg string) {
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rl := startRateLimitSystem[string](tokensPerInterval, interval, maxTokens)
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return func(ctx context.Context, _ *nostr.Event) (reject bool, msg string) {
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return rl(khatru.GetIP(ctx)), "rate-limited: slow down, please"
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}
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}
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func EventPubKeyRateLimiter(tokensPerInterval int, interval time.Duration, maxTokens int) func(ctx context.Context, _ *nostr.Event) (reject bool, msg string) {
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rl := startRateLimitSystem[string](tokensPerInterval, interval, maxTokens)
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return func(ctx context.Context, evt *nostr.Event) (reject bool, msg string) {
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return rl(evt.PubKey), "rate-limited: slow down, please"
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}
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}
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func ConnectionRateLimiter(tokensPerInterval int, interval time.Duration, maxTokens int) func(r *http.Request) bool {
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rl := startRateLimitSystem[string](tokensPerInterval, interval, maxTokens)
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return func(r *http.Request) bool {
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return rl(khatru.GetIPFromRequest(r))
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}
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}
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func FilterIPRateLimiter(tokensPerInterval int, interval time.Duration, maxTokens int) func(ctx context.Context, _ nostr.Filter) (reject bool, msg string) {
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rl := startRateLimitSystem[string](tokensPerInterval, interval, maxTokens)
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return func(ctx context.Context, _ nostr.Filter) (reject bool, msg string) {
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return rl(khatru.GetIP(ctx)), "rate-limited: there is a bug in the client, no one should be making so many requests"
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}
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}
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