41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
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package middleware
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import (
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"context"
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"io"
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"net/http"
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"apps/backend/internal/response"
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)
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const stripeWebhookMaxBytes = 1 << 20
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type stripeRawBodyKey struct{}
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type stripeSignatureKey struct{}
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type StripeRawBodyMiddleware struct {
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}
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func NewStripeRawBodyMiddleware() *StripeRawBodyMiddleware {
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return &StripeRawBodyMiddleware{}
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}
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func (m *StripeRawBodyMiddleware) Handle(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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body, err := io.ReadAll(http.MaxBytesReader(w, r.Body, stripeWebhookMaxBytes))
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if err != nil {
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response.Fail(w, http.StatusRequestEntityTooLarge, 413001, "webhook payload too large", nil)
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return
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}
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ctx := context.WithValue(r.Context(), stripeRawBodyKey{}, body)
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ctx = context.WithValue(ctx, stripeSignatureKey{}, r.Header.Get("Stripe-Signature"))
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next(w, r.WithContext(ctx))
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}
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}
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func StripeWebhookPayload(ctx context.Context) ([]byte, string, bool) {
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payload, payloadOK := ctx.Value(stripeRawBodyKey{}).([]byte)
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signature, signatureOK := ctx.Value(stripeSignatureKey{}).(string)
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return payload, signature, payloadOK && signatureOK
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}
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