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refactor event handler

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This commit is contained in:
0ceanSlim 2024-08-30 15:51:46 -04:00
parent e8b1380c90
commit 6f15f3f23a
1 changed files with 59 additions and 45 deletions
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104
server/handlers/event.go
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@ -45,12 +45,71 @@ func HandleEvent(ws *websocket.Conn, message []interface{}) {
} }
eventSize := len(eventBytes) // Calculate event size eventSize := len(eventBytes) // Calculate event size
if !handleBlacklistAndWhitelist(ws, evt) {
return
}
if !handleRateAndSizeLimits(ws, evt, eventSize) {
return
}
HandleKind(context.TODO(), evt, ws, eventSize) HandleKind(context.TODO(), evt, ws, eventSize)
fmt.Println("Event processed:", evt.ID) fmt.Println("Event processed:", evt.ID)
}) })
} }
func handleBlacklistAndWhitelist(ws *websocket.Conn, evt relay.Event) bool {
if config.GetConfig().DomainWhitelist.Enabled {
domains := config.GetConfig().DomainWhitelist.Domains
pubkeys, err := utils.FetchPubkeysFromDomains(domains)
if err != nil {
fmt.Println("Error fetching pubkeys from domains:", err)
response.SendNotice(ws, "", "Error fetching pubkeys from domains")
return false
}
for _, pubkey := range pubkeys {
config.GetConfig().PubkeyWhitelist.Pubkeys = append(config.GetConfig().PubkeyWhitelist.Pubkeys, pubkey)
}
}
if blacklisted, msg := utils.CheckBlacklist(evt.PubKey, evt.Content); blacklisted {
response.SendOK(ws, evt.ID, false, msg)
return false
}
if config.GetConfig().KindWhitelist.Enabled && !utils.IsKindWhitelisted(evt.Kind) {
response.SendOK(ws, evt.ID, false, "not allowed: event kind is not whitelisted")
return false
}
if config.GetConfig().PubkeyWhitelist.Enabled && !utils.IsPubKeyWhitelisted(evt.PubKey) {
response.SendOK(ws, evt.ID, false, "not allowed: pubkey or npub is not whitelisted")
return false
}
return true
}
func handleRateAndSizeLimits(ws *websocket.Conn, evt relay.Event, eventSize int) bool {
rateLimiter := config.GetRateLimiter()
sizeLimiter := config.GetSizeLimiter()
category := determineCategory(evt.Kind)
if allowed, msg := rateLimiter.AllowEvent(evt.Kind, category); !allowed {
response.SendOK(ws, evt.ID, false, msg)
return false
}
if allowed, msg := sizeLimiter.AllowSize(evt.Kind, eventSize); !allowed {
response.SendOK(ws, evt.ID, false, msg)
return false
}
return true
}
func HandleKind(ctx context.Context, evt relay.Event, ws *websocket.Conn, eventSize int) { func HandleKind(ctx context.Context, evt relay.Event, ws *websocket.Conn, eventSize int) {
if !utils.CheckSignature(evt) { if !utils.CheckSignature(evt) {
response.SendOK(ws, evt.ID, false, "invalid: signature verification failed") response.SendOK(ws, evt.ID, false, "invalid: signature verification failed")
@ -58,51 +117,6 @@ func HandleKind(ctx context.Context, evt relay.Event, ws *websocket.Conn, eventS
} }
collection := db.GetCollection(evt.Kind) collection := db.GetCollection(evt.Kind)
rateLimiter := config.GetRateLimiter()
sizeLimiter := config.GetSizeLimiter()
if config.GetConfig().DomainWhitelist.Enabled {
domains := config.GetConfig().DomainWhitelist.Domains
pubkeys, err := utils.FetchPubkeysFromDomains(domains)
if err != nil {
fmt.Println("Error fetching pubkeys from domains:", err)
response.SendNotice(ws, "", "Error fetching pubkeys from domains")
return
}
for _, pubkey := range pubkeys {
config.GetConfig().PubkeyWhitelist.Pubkeys = append(config.GetConfig().PubkeyWhitelist.Pubkeys, pubkey)
}
}
// Check against manual blacklist
if blacklisted, msg := utils.CheckBlacklist(evt.PubKey, evt.Content); blacklisted {
response.SendOK(ws, evt.ID, false, msg)
return
}
// Check if the kind is whitelisted
if config.GetConfig().KindWhitelist.Enabled && !utils.IsKindWhitelisted(evt.Kind) {
response.SendOK(ws, evt.ID, false, "not allowed: event kind is not whitelisted")
return
}
// Check pubkey/npub whitelist only if the kind is not whitelisted
if config.GetConfig().PubkeyWhitelist.Enabled && !utils.IsPubKeyWhitelisted(evt.PubKey) {
response.SendOK(ws, evt.ID, false, "not allowed: pubkey or npub is not whitelisted")
return
}
category := determineCategory(evt.Kind)
if allowed, msg := rateLimiter.AllowEvent(evt.Kind, category); !allowed {
response.SendOK(ws, evt.ID, false, msg)
return
}
if allowed, msg := sizeLimiter.AllowSize(evt.Kind, eventSize); !allowed {
response.SendOK(ws, evt.ID, false, msg)
return
}
var err error var err error
switch { switch {